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    Wyświetlanie 1-11 z 11
    Tytuł:
    Charakterystyka jakości technicznej drewna paulowni COTE-2
    Characteristics of the technical properties of Paulownia COTE-2 wood
    Autorzy:
    Lachowicz, H.
    Giedrowicz, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/978955.pdf
    Data publikacji:
    2020
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    mechanical and physical properties
    wood of fast growing trees
    Paulownia COTE-2
    Opis:
    Seedlings of Paulownia (Paulownia sp.) has increasingly appeared in the merchant offers in Poland. However, the knowledge of the technical characteristics of its wood is still insufficient because comprehensive studies of wood properties for this species have not been performed. The main aim of this study was to determine the selected physical and mechanical properties of Paulownia COTE−2 wood. The wood comes from the plantation of Paulownia COTE−2 located in Granada region in Spain. The investigation were carried on 162 samples, according to Polish standards. We analysed the following physical properties: air−dry density, oven−dry density, basic density, proportion of wood substance, wood porosity, total shrinkage of wood in longitudinal, tangential and radial anatomical directions, volumetric shrinkage, coefficients of each of mentioned shrinkage, the anisotropy index of shrinkage and mechanical properties: compression strength, static bending, modulus of elasticity in static bending, including the coefficients of the mechanical properties mentioned before. The results show that Paulownia wood is very light, with the density of 270 kg/m3 and low shrinking (volumetric shrinkage equaled to 7%). The mechanical properties of Paulownia wood are closely related to its density. Static bending equaled to 38 MPa and compression strength parallel to grain amounted to 24 MPa.
    Źródło:
    Sylwan; 2020, 164, 05; 414-423
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Właściwości fizyczne drewna sosny zwyczajnej z Puszczy Noteckiej
    Physical properties of Scots pine wood from the Notecka Forest
    Autorzy:
    Roszyk, E.
    Moliński, W.
    Kusiak, W.
    Prądzynski, W.
    Zborowska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/989533.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    sosna zwyczajna
    Pinus sylvestris
    drewno sosnowe
    wlasciwosci fizyczne
    proweniencje
    Puszcza Notecka
    Polska
    pinus sylvestris
    wood physical properties
    poland
    Opis:
    The aim of the study was to determine the relationship between the quality of habitat and the quality of Scots pine wood. We focused on the wood from mature stands growing on poor habitats on inland dunes in the Notecka Forest and on former farmlands (central and western Poland). We selected 12 trees, from which we took wood samples for tree ring investigation. We determined the age of trees, width of increments, share of late− and hardwood, and the moisture and density of the wood. Samples were weighed with 0.001 g accuracy and their volume was determined with hydrostatic method. Next, samples were dried and their mass was determined again. The obtained results were used to calculate: initial and conventional wood density as well as moisture content of each sample. Properties of the examined wood derived both from Notecka Forest as well as from farmlands were advantageous from the point of view of its technical quality. Mean width of annual increments, both near−pith and near−circumferential, ranged from 1.70 to 1.99 mm and qualified analysed wood as the narrow−ringed. The examined wood characterised high proportion of latewood, close to the upper limit given in literature for standard conifer wood and by high density. Mean share of latewood in the near−pith increments ranged from 18.9 to 30.6%, while in near−circumferential increments – from 34.3 to 45.7%. The highest average conventional density amounted to 507 kg/m³, whereas the lowest – to 466 kg/m³. The obtained results revealed that the wood from the Notecka Forest had favorable properties in terms of technical quality. It had the characteristics of slow−grown wood and was characterized by a high proportion of latewood in annual increments and a conventional density higher than the one reported in the literature.
    Źródło:
    Sylwan; 2016, 160, 07; 547-555
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Charakterystyka techniczna drewna modrzewia dahurskiego (Larix gmellini (Rupr.) Kuzen.)
    Characteristics of technical properties of Dahurian larch (Larix gmellini (Rupr.) Kuzen.) wood
    Autorzy:
    Jankowska, A.
    Anders, B.
    Wójcik, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/980329.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    modrzew dahurski
    Larix gmelinii
    drewno modrzewiowe
    budowa drewna
    budowa mikroskopowa
    charakterystyka techniczna
    wlasciwosci fizyczne
    wlasciwosci mechaniczne
    larch
    mechanical properties
    physical properties
    brown rot fungus
    wood anatomy
    Opis:
    The wood present in trade in Poland named as ‘Siberian larch’, in fact belongs to two tree species: Larix sibirica Ledeb. and Larix gmelinii (Rupr.) Kuzen. The term itself is rather associated with the origin of wood. While Larix sibirica wood is the subject of many research, characteristics of Larix gmelinii still require additions. The main aim of this paper was to describe the technical properties of Dahurian larch wood. We characterised also the microstructure of the wood. Moreover, durability against fungi−caused brown rot was tested. The wood from the Chabarowsk area (Russia) was tested. The properties of wood were determined in accordance with the recom−mendations of the Polish standards. The obtained results allow to conclude that Dahurian larch wood is characterized by medium shrinkage and typical shrinkage anisotropy (total radial shrinkage was 5.0% and in the tangential direction 7.6%). With the average density of this wood in an air−dry state equal to 620 kg/m3, average mechanical properties are associated – modulus of elasticity 12.5 GPa and Janka hardness on the cross−section of 57 MPa. These values are similar to those of Siberian larch. Dahurian larch heartwoods is characterized by low durability (4th class of natural durability to fungi in a 5−degree scale). It causes that wood used in external environment require special attention and use of wood preservatives.
    Źródło:
    Sylwan; 2019, 163, 01; 47-54
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zmienność dobowej wydajności i wybranych parametrów fizycznych soku brzozowego
    Variability of daily productivity and selected physical parameters of birch sap
    Autorzy:
    Bilek, M.
    Sosnowski, S.
    Tomusiak, R.
    Oktaba, J.
    Staniszewski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/985740.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    uboczne uzytkowanie lasu
    lesne surowce niedrzewne
    sok brzozowy
    wydajnosc dobowa
    wlasciwosci fizyczne
    non−wood forest products
    birch sap
    birch syrup
    physical properties
    Opis:
    The increasing social demand for food products collecting from the forests has beem observed currently. It should be assumed that one of the more and more important non−wood forest products in Poland is silver birch sap. Research in this area should concern not only the proper methods of its collection and yield, but also the rules of selecting forest stands and trees for its collection, as well in the context of protection of forest ecosystems, especially the quality of the obtained product and the safety of its consumption. The aim of this study was to examine the influence of air temperature on the daily volume of collected birch sap, determine the dependence of the volume of sap obtained on the selected physical parameters of the sap, as well as determine if there are changes in the values of the parameters tested as a function of time. It was not proved that the volume of the daily sap leak is related to the parameter of the refractive value, dry matter and electrolytical conductivity. It was found that the volume of the sap obtained is not significantly affected by the temperature on the day of the collection nor at the night immediately preceding the leak, while the relation between the intensity of the leak and thermal conditions several tens of hours earlier was indicated. Moreover, it was not shown that there was an optimal, determinable term in which birch sap is characterized by the most favorable parameters in terms of suitability for the production of birch syrup. It was also found that in the case of commercial birch sap harvesting on large scale, it is advisable to harvest and combine the sap from as many trees as possible. The necessity of further studies on the food and industrial usefulness of birch sap, including geographical, habitat and age variability of birch stands was underlined as well.
    Źródło:
    Sylwan; 2019, 163, 06; 443-451
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Charakterystyka techniczna drewna limby syberyjskiej (Pinus sibirica Du Tour.)
    Characteristic technical properties of Siberian yellow pine (Pinus sibirica Du Tour.) wood
    Autorzy:
    Jankowska, A.
    Anders, B.
    Mastyna, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/986686.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    drzewnictwo
    limba syberyjska
    Pinus sibirica
    drewno limbowe
    charakterystyka techniczna
    wlasciwosci mechaniczne
    wlasciwosci fizyczne
    anatomia drewna
    odpornosc na biodegradacje
    siberian yellow pine
    mechanical and physical properties
    brown rot fungus
    wood anatomy
    Opis:
    Siberian yellow pine (Pinus sibirica Du Tour.) has increasingly appeared in the merchant offers on the market of raw wood materials in Poland. However, the knowledge of the technical characteristics of its wood is still insufficient for it is based primarily on the data and experiences from abroad, often from the literature of the former USSR. The main aim of this study was to determine selected physical and mechanical properties of Siberian yellow pine wood such as linear and volumetric shrinkage, compressive strength along the fibers, the tensile strength along the fibers, the tensile strength across the fibers, static bending and modulus of elasticity, flexural dynamic and impact strength, hardness, resistance to splitting and cleavage amd shear strength. Futhermore, the resistance to decay caused by Coniophora puteana (Schum., Fr.) Karst., as well as the examination of the wood structure, assessing the dimensions and arrangement of the structural elements in particular were conducted. The results show that Siberian yellow pine wood has a number of similarities to Scots pine wood in terms of the structure. The wood is very light, with a density of 391 kg/m3 and very soft (Janka hardness on transverse cross section 23 MPa). The mechanical properties of Siberian yellow pine wood are closely related to its density and much lower when compared with Scots pine. Shear strength equalled to 67 MPa, static bending strength – 65 MPa and compression strength along the fibers – 49 MPa. The durability to brown rot fungus of Siberian pine wood is comparable to Scots pine (3rd class according to PN−EN 350−2:2000).
    Źródło:
    Sylwan; 2017, 161, 09; 756-762
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wieloczynnikowa analiza zmienności gęstości drewna brzozy brodawkowatej (Betula pendula Roth.)
    Multivariate analysis of the variation in silver birch (Betula pendula Roth.) wood density
    Autorzy:
    Lachowicz, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/1008805.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    drzewa lesne
    brzoza brodawkowata
    Betula pendula
    drewno brzozowe
    gestosc drewna
    analiza zmiennosci
    analiza wieloczynnikowa
    klasy grubosci
    wiek drzew
    lokalizacja geograficzna
    silver birch
    wood density
    physical−mechanical properties
    Opis:
    The aim of the research was to determine the variation in wood density of the silver birch in north−eastern Poland depending on the location (geographic region), age and interaction between these two factors, as well as the diameter of trees. Samples were taken for measurement from twelve sample plots with the trees aged 45 and 70 years growing in the fresh forest habitat. Statistical analysis was applied to the mean wood density values calculated for wood samples of the sizes: 20×20×300 mm, 20×20×30 mm and 30×2.66×0.1 mm. The study confirmed a significant effect of the location, simultaneous effect of the location and age, as well as the diameter of trees on the mean values of silver birch wood density for all examined sample sizes. No significant effect of the age on the mean values of birch wood density for all examined sample sizes was found. The mean value of wood density for the sample size 30×2.66×0.1 mm was the highest for the whole sampled material, amounting to 699.29 kg/m3, the wood density for the sample size 20×20×300 mm was lower – 681.04 kg/m3 and for the sample size 20×20×30 mm it was the lowest – 679.76 kg/m3.
    Źródło:
    Sylwan; 2012, 156, 06; 414-419
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Właściwości fizyczne i mechaniczne oraz budowa anatomiczna drewna jałowca pospolitego (Juniperus communis L.)
    Physical and mechanical properties and anatomy of common juniper (Juniperus communis L.) wood
    Autorzy:
    Kozakiewicz, P.
    Życzkowski, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/973557.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    nauka o drewnie
    Juniperus communis
    budowa drewna
    budowa anatomiczna
    właściwości mechanicze
    leśnictwo
    jałowiec pospolity
    drewno jałowcowe
    właściwości fizyczne
    common juniper
    wood anatomy
    physical and mechanical properties
    Opis:
    The common juniper is a well−known arboreal plant with wide range of the occurrence and small habitat requirements. It is the most numerous coniferous shrub in Poland, sometimes taking shape of small tree. There is no sufficient data about the anatomy as well as physical and mechanical properties of common juniper wood in available literature. Hence, the objectives of this paper were to supplement the knowledge about the properties and anatomy of the juniper wood. The nine trunks of the common juniper of column shape were harvested to this investigation. These small trees with height up to 5 meters were 34−38 years−old. They grew on postagricultural area on brown podzol (common sand) in Łomża Forest District (E Poland). It is a sunny area on the rim of subcontinental fresh coniferous forest – one of the typical and favourable habitat for the common juniper in Poland. We analysed the microstructural elements of common juniper wood. The main component of the microstructure are short (average length 2.5 mm) and thin−walled tracheids (wall thickness from 2.4 µm in traheids of spring wood to 4.2 µm in tracheids of summer wood). Domination of this type of microstructural elements has influence on physical and mechanical properties of wood. Investigated wood characterised with low coefficient of shrinkage. The volumetric coefficient of shrinkage is 10.2%, so the wood has not tendency to crack and distort. The common juniper wood has slightly higher density (562 kg/m3 in air−dry state) than Scots pine wood and similar hardness, shear strength (91 MPa), static bending strength (85 MPa) and compression strength parallel to grain (49 MPa). The latter is directly proportional to density of the wood. The other mechanical properties of common juniper wood: modulus of elasticity and tension strength parallel to grain are significantly lower than for Scots pine wood. It is the influence of wood microstructure, not rectilinear arrangement of cell in wood and significant content of juvenile wood. Considering these aspects and modes dimensions of common juniper raw material, the potential use are different including small wooden articles especially kitchen accessories.
    Źródło:
    Sylwan; 2015, 159, 02; 151-159
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ siedliska na wybrane właściwości strukturalne i fizyko-mechaniczne drewna brzozy brodawkowatej (Betula pendula Roth.)
    Effect of habitat on the selected structural and physico-mechanical properties of silver birch (Betula pendula Roth.) wood
    Autorzy:
    Lachowicz, H.
    Jednoralski, G.
    Paschalis-Jakubowicz, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/990000.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    drzewa lesne
    brzoza brodawkowata
    Betula pendula
    siedliska lesne
    las swiezy
    las mieszany swiezy
    drewno brzozowe
    wlasciwosci strukturalne
    wlasciwosci fizykomechaniczne
    czynniki siedliska
    silver birch
    structural and physical−mechanical properties
    commercial quality
    habitat type
    Opis:
    The aim of the research was to determine the habitat−related variation in the selected structural and physical−mechanical properties of silver birch. Two sample plots were established in the territory of the Biała Podlaska Forest District in eastern Poland. Samples for measurement were taken from the plots with trees aged 45−50 years growing in the fresh deciduous (Lśw) and fresh mixed deciduous (LMśw) forest habitats. The following properties were subjected to statistical analysis: the average width of annual rings, wood density determined for the samples of 20×20×300 mm, 20×20×30 mm, and 30×2.66×0.1 mm in size (the last dimension parallel to grain), tensile strength parallel to grain, compression strength parallel to grain, static bending, modulus of elasticity in static bending and the coefficients of tensile strength parallel to grain, compression parallel to grain, static bending, and modulus of elasticity in static bending. The research confirmed a significant effect of the habitat on the mean values of birch wood density for all examined sample sizes, tensile strength parallel to grain, static bending and modulus of elasticity in static bending. No significant effect of the habitat on the mean values of annual ring width, tensile strength parallel to grain and the coefficients of tensile strength parallel to grain, compression strength parallel to grain, static bending and modulus of elasticity in static bending for birch wood samples was found.
    Źródło:
    Sylwan; 2014, 158, 04; 285-291
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ położenia i wieku drzew na wartości współczynników jakości wytrzymałościowej drewna brzozy brodawkowatej (Betula pendula Roth.)
    Influence of location and age on the value of wood strength coefficients for silver birch (Betula pendula Roth.)
    Autorzy:
    Lachowicz, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/1008873.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    drzewa lesne
    lokalizacja
    wiek drzew
    brzoza brodawkowata
    Betula pendula
    drewno brzozowe
    wlasciwosci mechaniczne
    wytrzymalosc na sciskanie wzdluz wlokien
    wytrzymalosc na zginanie statyczne
    wytrzymalosc na rozciaganie wzdluz wlokien
    modul sprezystosci
    silver birch
    wood
    physical−mechanical properties
    wood strength coefficients
    Opis:
    Variation of wood strength coefficients was determined for the silver birch trees coming from north−eastern Poland which is the main source of raw material of this species. Samples were taken for measurement from twelve sample plots with trees at the age of 45 and 70 years growing in the fresh forest habitat. Strength coefficients were subjected to statistical analysis for compression parallel to grain, static bending, tensile strength parallel to grain and the modulus of elasticity in static bending. The research confirmed a significant effect of the location and age of trees on the mean values of coefficients of compression strength and modulus of elasticity in static bending. Moreover, a significant influence of location on the mean values of coefficients of tensile strength parallel to grain and static bending strength without the effect of tree age on these coefficients was found. Also a simultaneous influence of the location and age of trees on the mean values of all studied coefficients was demonstrated.
    Źródło:
    Sylwan; 2011, 155, 08; 535-545
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Jakość techniczna drewna 35-letnich świerków (Picea abies L. H. Karst) rosnących na powierzchni proweniencyjnej w LZD Rogów
    Technical quality of wood of 35 years old Norway spruce (Picea abies L. H. Karst) growing on experimental plot in the Rogow Forest Experimental Station
    Autorzy:
    Bieniasz, A.
    Lachowicz, H.
    Buraczyk, W.
    Moskalik, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/986710.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    drzewnictwo
    swierk pospolity
    Picea abies
    proweniencje
    drewno swierkowe
    jakosc techniczna
    wlasciwosci mechaniczne
    wlasciwosci fizyczne
    struktura drewna
    wood properties
    structural
    mechanical and physical parameters
    conifer timber
    Opis:
    The aim of this paper is to investigate and compare structural, mechanical and physical properties of wood of Norway spruce growing on experimental plot in Rogów (central Poland). The planting material consisted of seeds sourced from six selected provenances. Three of them originated from lowlands, while the others have mountain origins (tab. 1). The plot was established in 1975 and the wood was harvested in 2010. Wood samples were prepared and measured according to the Polish Standards describing those procedures. The following properties were subjected to the research and statistical analyses: average tree−ring width, share of latewood, wood density, compression strength parallel to grain, static bending, modulus of elasticity in static bending and the coeffi− cients of compression strength parallel to grain, static bending, and modulus of elasticity in static bending. Results of the investigation were correlated in the frame of each provenance. Wood density determines values of compression strength parallel to grain, static bending and modulus of elasticity in static bending. The higher wood density, the higher values of the mechanical properties. Ordering provenances by the wood density demonstrates the same results as ordering by values of compression strength parallel to grain. The high values of density and mechanical properties prove good technical quality of the analysed wood. The structural properties (the average tree−ring width and the share of latewood) are correlated to the wood density as well. They are additional features to describe wood quality, but are not as accurate as the mechanical properties. The quality of wood from all investigated provenances is high, what makes impossible to distinguish wood from selected provenances using applied features. Wood from Nowe Ramuki and Kartuzy (i.e. lowland) provenances has the best quality parameters, while one from Istebna Bukowiec and Stronie Śląskie (mountain) provenances demonstrated the worst properties (tab. 2). The results do not prove the opinion about the best quality of Norway spruce wood originating from the mountains.
    Źródło:
    Sylwan; 2017, 161, 10; 851-860
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Jakość techniczna drewna 35-letnich świerków (Picea abies L. H. Karst) rosnących na powierzchni proweniencyjnej w LZD Rogów
    Technical quality of wood of 35 years old Norway spruce (Picea abies L. H. Karst) growing on experimental plot in the Rogow Forest Experimental Station
    Autorzy:
    Bieniasz, A.
    Lachowicz, H.
    Buraczyk, W.
    Moskalik, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/986716.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    drzewnictwo
    swierk pospolity
    Picea abies
    proweniencje
    drewno swierkowe
    jakosc techniczna
    wlasciwosci mechaniczne
    wlasciwosci fizyczne
    struktura drewna
    wood properties
    structural
    mechanical and physical parameters
    conifer timber
    Opis:
    The aim of this paper is to investigate and compare structural, mechanical and physical properties of wood of Norway spruce growing on experimental plot in Rogów (central Poland). The planting material consisted of seeds sourced from six selected provenances. Three of them originated from lowlands, while the others have mountain origins (tab. 1). The plot was established in 1975 and the wood was harvested in 2010. Wood samples were prepared and measured according to the Polish Standards describing those procedures. The following properties were subjected to the research and statistical analyses: average tree−ring width, share of latewood, wood density, compression strength parallel to grain, static bending, modulus of elasticity in static bending and the coeffi− cients of compression strength parallel to grain, static bending, and modulus of elasticity in static bending. Results of the investigation were correlated in the frame of each provenance. Wood density determines values of compression strength parallel to grain, static bending and modulus of elasticity in static bending. The higher wood density, the higher values of the mechanical properties. Ordering provenances by the wood density demonstrates the same results as ordering by values of compression strength parallel to grain. The high values of density and mechanical properties prove good technical quality of the analysed wood. The structural properties (the average tree−ring width and the share of latewood) are correlated to the wood density as well. They are additional features to describe wood quality, but are not as accurate as the mechanical properties. The quality of wood from all investigated provenances is high, what makes impossible to distinguish wood from selected provenances using applied features. Wood from Nowe Ramuki and Kartuzy (i.e. lowland) provenances has the best quality parameters, while one from Istebna Bukowiec and Stronie Śląskie (mountain) provenances demonstrated the worst properties (tab. 2). The results do not prove the opinion about the best quality of Norway spruce wood originating from the mountains.
    Źródło:
    Sylwan; 2017, 161, 10; 851-860
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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