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Wyszukujesz frazę "pine wood" wg kryterium: Temat


Tytuł:
Mechano-sorptive creep of Portuguese pinewood chemically modified
Autorzy:
Lopes, D.B.
Mai, C.
Powiązania:
https://bibliotekanauki.pl/articles/38325.pdf
Data publikacji:
2014
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
creep factor
Portuguese pine wood
pine wood
chemically modified wood
modified wood
mechano-sorptive effect
wax
resin
Opis:
The effect of chemical modification on mechano-sorptive creep in bending was studied by experimental work. Stakes with 20 × 20 × 400 mm RTL of Portuguese wood species (Pinus pinaster Aiton) modified with 1,3-dimethylol-4,5- dihydroxyethyleneurea (DMDHEU), m-methylated melamine resin (MMF), tetraethoxysilane (TEOS) and amid wax (WA) were measured under asymmetric moistening conditions over a period of 42 days (app. 1000 hours) with stress level (SL) of 12 MPa, according to ENV 1156. The cell wall treatments (DMDHEU and MMF resins) had shown significant reduction of creep (creep factors, kc) when compared to untreated wood under similar conditions. Both types of resins and levels of treatments (different WPG) did not shown significant effects. In the lumen fill treatments, deposit material of TEOS did not affected the creep behaviour (kc); Wax treatment was shown a particular compliance of creep due to avoid exchange moisture (by the hydrophobic effect of wax). The anti-creep efficiency (ACE) correlated better than other mechanical or physical properties imparted by the modification process.
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2014, 56, 1
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Correlation between the share of latewood and the density of sawn timber from the Silesian Forestry Region
Autorzy:
Mańkowski, Piotr
Krzosek, Sławomir
Burawska-Kupniewska, Izabela
Grześkiewicz, Marek
Mirski, Radosław
Powiązania:
https://bibliotekanauki.pl/articles/2200224.pdf
Data publikacji:
2020
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
pine wood
Silesia
latewood proportion (LWP)
density
Opis:
Correlation between the share of latewood and the density of sawn timber from the Silesian Forestry Region. The paper describes the results of density measurements and the share of latewood in pine wood samples (Pinus sylvestris L.) from the Silesian Forestry Region in Poland. The samples were obtained from sawn timber from different kinds of log: butt, middle and top. The place from which the timber was obtained (three different log kinds) was taken into account when assessing the correlation between wood density and the share of latewood.
Zależność pomiędzy udziałem drewna późnego a gęstością drewna tartacznego pochodzącego ze Śląskiej KP-L. W pracy przedstawiono wyniki pomiarów gęstości drewna i udziału drewna późnego dla próbek drewna sosnowego pobranych z tarcicy pozyskanej z kłód odziomkowych, środkowych i wierzchołkowych pochodzących ze Śląskiej Krainy Przyrodniczo-Leśnej. Wraz z rosnącą gęstością drewna rośnie udział drewna późnego. Dla drewna strefy odziomkowej zależność jest słaba, dla stref środkowej i wierzchołkowej R2 jest zdecydowanie wyższa. Charakter zmian dla części odziomkowej (O), środkowej (S) i wierzchołkowej (W) jest zbliżony.
Źródło:
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology; 2020, 109; 70--75
1898-5912
Pojawia się w:
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bending creep behaviour of OSB-webbed I-beam
Autorzy:
Plenzler, R.
Murawski, T.
Powiązania:
https://bibliotekanauki.pl/articles/29955.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
creep test
behaviour
composite beam
viscoelasticity
creep model
pine wood
wood
Źródło:
Folia Forestalia Polonica. Series B - Drzewnictwo; 2010, 41
0071-6685
Pojawia się w:
Folia Forestalia Polonica. Series B - Drzewnictwo
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Strength of Adhesive Joints of Thermally Modified Ash Wood Glued With Polyvinyl Acetate – Based Adhesives
Autorzy:
Kshyvetskyy Yroslavovich, Bogdan
Datskiv Mykolayivna, Halyna
Powiązania:
https://bibliotekanauki.pl/articles/27323540.pdf
Data publikacji:
2023
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna
Tematy:
adhesives
gluing
thermally modified ash
pine wood
adhesion
Opis:
Adhesives for gluing thermally modified wood were analyzed. The methods for conducting experimental studies to determine the strength of adhesive joints of thermally modified ash wood and unmodified pine wood, using polyvinyl acetate (PVAc)-based adhesives of durability class D4 were described. According to the results of experimental studies based on the proposed methodology, it was established that the strength of adhesive joints of thermally modified ash wood and unmodified pine wood stretched along the fibers after the first stage of testing is 6.21 MPa, after the second stage 4.56 MPa, and after the third stage 3.90 MPa. The average strength of the adhesive joints of the control specimens is 7.12 MPa. According to the obtained research results, the nature of destruction of the adhesive joints of thermally modified ash wood and unmodified pine wood was determined depending on the test stage. The greatest destruction occurred on the adhesive line, and the least on the pine wood. It was assumed theoretically that during the thermal modification of ash wood, hemicellulose decomposes and acetic acid is released, leading to the formation of furfural, which impairs wood surface wetting and affects the adhesive strength of PVA-based adhesive joints.
Źródło:
Drewno. Prace Naukowe. Doniesienia. Komunikaty; 2023, 66, 211; Art. no. 1644-3985.426.03
1644-3985
Pojawia się w:
Drewno. Prace Naukowe. Doniesienia. Komunikaty
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pathogenicity of selected isolates of the quarantine pinewood nematode Bursaphelenchus xylophilus to Scots pine (Pinus sylvestris L.)
Autorzy:
Filipiak, A.
Powiązania:
https://bibliotekanauki.pl/articles/65404.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
pathogenicity
isolate
pine wood
nematode
Bursaphelenchus xylophilus
Scotch pine
Pinus sylvestris
Opis:
The pinewood nematode (PWN), Bursaphelenchus xylophilus, is the causal agent of pine wilt disease (PWD). This nematode is considered to be an indigenous to North America and was introduced to Japan in the late 19th century. Subsequently, it has spread throughout Japan and in many other countries, China, Taiwan, and South Korea. In 1999, B. xylophilus was discovered in Portugal, and in 2008 in Spain. So far the studies have revealed that the pathogenicity of B. xylophilus varies between different isolates. The conducted study compared the pathogenicity of five isolates of B. xylophilus, originating from different parts of Japan, to 3-year-old Pinus sylvestris, and their ability to reproduce in the seedlings. The results revealed diverse virulence of B. xylophilus resulting in plant mortality. Three isolates S10, Ka4, and T4 caused 100% mortality of plants within three months while at the same time, the other two isolates, C14-5 and OKD-1 did not cause any disease symptoms on plants. After seven months, some dieback occurred on two seedlings, but similar symptoms were also found on the control plant. Moreover, a significant positive correlation was found between nematode virulence and the number of nematodes reproducing on pine seedlings.
Źródło:
Journal of Plant Protection Research; 2015, 55, 4
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Variability in static bending strength of the "Taborz" Scots pine wood (Pinus sylvestris L.)
Autorzy:
Wasik, R.
Michalec, K.
Mudryk, K.
Powiązania:
https://bibliotekanauki.pl/articles/52447.pdf
Data publikacji:
2016
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna
Tematy:
variability
static bending strength
Taborz Scotch pine
pine wood
Scotch pine
Pinus sylvestris
Źródło:
Drewno. Prace Naukowe. Doniesienia. Komunikaty; 2016, 59, 196
1644-3985
Pojawia się w:
Drewno. Prace Naukowe. Doniesienia. Komunikaty
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of top layer density and thickness on hardness of two-layer floor elements
Autorzy:
Grześkiewicz, Marek
Kozakiewicz, Paweł
Borysiuk, Piotr
Romanovski, Valerjan
Cichy, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/962355.pdf
Data publikacji:
2020
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna
Tematy:
floor elements
ash wood
pine wood
top layer thickness
wood hardness
two-layer floor
Opis:
The subject of this paper is testing the hardness of two-layer floor materials with top layer made of ash wood in tangential cut, and bottom layer made of pine wood, radial cut, with cross wood fibre layout in both layers. Tests were carried out for top layer thickness 6.6 mm, 4.0 mm and 2.0 mm. Strong correlations were noticed between the hardness of floor elements and the density of the top layer for each thickness variant. Overall statistically significant influence of bottom layer density on the hardness of two-layer floor elements was observed in samples whose top layer was 2.0 mm thick.
Źródło:
Drewno. Prace Naukowe. Doniesienia. Komunikaty; 2020, 62, 205; 69-80
1644-3985
Pojawia się w:
Drewno. Prace Naukowe. Doniesienia. Komunikaty
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of selected factors on the strenght of wood adhesive joints
Autorzy:
Rudawska, Anna
Maziarz, Marek
Šajgalík, Michał
Valášek, Petr
Zlamal, Tomas
Iasnii, Volodymyr
Powiązania:
https://bibliotekanauki.pl/articles/102152.pdf
Data publikacji:
2018
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
adhesive joint
strength
pine wood
oak wood
połączenie klejowe
siła
drewno sosnowe
drewno dębowe
Opis:
This paper examines the effect of selected factors on the wood bonded joint strength. The structural factor under scrutiny was the geometry of the surface area; however, other major dimensions of adherends were compared as well. The tests were performed on 6 joint types: butt, v-shaped, interlocking, scarf, tongue & groove, and single lap joints, which were formed on two types of substrate materials – pine and oak wood, and adhesively bonded. The joints were bonded with Prefere 6312 wood adhesive and Loctite 3430 two-component epoxy adhesive. Strength testing of the joints was performed on Zwick/Roell Z150 material testing machine, according to DIN EN 1465 standard. The results obtained from the tests indicate that bonded joints of oak wood exhibit higher strength properties than those of pine wood adherends, which was confirmed in nearly all strength tests.
Źródło:
Advances in Science and Technology. Research Journal; 2018, 12, 3; 47-54
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Properties and dimensional stability of 12 500-year-old subfossil pine wood
Autorzy:
Fejfer, M.
Zborowska, M.
Adamek, O.
Dzieduszynska, D.
Kittel, P.
Petera-Zganiacz, J.
Twardy, J.
Powiązania:
https://bibliotekanauki.pl/articles/52869.pdf
Data publikacji:
2014
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna
Tematy:
wood property
dimensional stabilization
subfossil
pine wood
Scotch pine
Pinus sylvestris
chemical composition
physical property
conservation
hygroscopic property
Opis:
At the Koźmin Las site, in Central Poland, in the middle section of the Warta River valley, a series of well-preserved tree trunks and in situ stumps, as well as organic deposits, have been found. The tree remains are dated back to the period between 13,000–12,600 cal BP, i.e. to the Alleröd/Younger Dryas transition. The forest consisted predominantly of pines (Pinus sylvestris L.) of a maximum age of approx. 140 years and an average age of 68 years, and the river valley floor was overgrown. The forest was destroyed ca. 12,600 cal BP by deteriorating hydrological conditions or a sudden catastrophic event. The aim of the study was to assess the degree of degradation in terms of selected macroscopic, physical and chemical properties of a subfossil pine log. On this basis, a conservation process was developed,using aqueous solutions of polyethylene glycols (PEG) with varying concentrations of low- and high-molecular polymers. Treated and dried samples were comparedin terms of their tangential and radial dimensional stability, as well as their hygroscopic properties.
Źródło:
Drewno. Prace Naukowe. Doniesienia. Komunikaty; 2014, 57, 193
1644-3985
Pojawia się w:
Drewno. Prace Naukowe. Doniesienia. Komunikaty
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of heat treatment on the physico-chemical properties of pinewood (Pinus sylvestris L.)
Autorzy:
Zawadzki, J.
Gawron, J.
Antczak, A.
Klosinska, T.
Radomski, A.
Powiązania:
https://bibliotekanauki.pl/articles/52847.pdf
Data publikacji:
2016
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna
Tematy:
pine
heat treatment
physicochemical property
pine wood
Pinus sylvestris
cellulose
polymerization degree
mechanical property
Źródło:
Drewno. Prace Naukowe. Doniesienia. Komunikaty; 2016, 59, 196
1644-3985
Pojawia się w:
Drewno. Prace Naukowe. Doniesienia. Komunikaty
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A comparative analysis of pine and beech wood classification according to Polish and EU norms
Autorzy:
Barszcz, A.
Michalec, K.
Wasik, R.
Powiązania:
https://bibliotekanauki.pl/articles/52675.pdf
Data publikacji:
2014
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna
Tematy:
comparative analysis
pine wood
beech wood
wood
classification
Polish standard
European Union standard
pine timber
beech timber
timber defect
Opis:
Investigations were carried out at timber storage sites (depots) on large-sized pine (110 pieces) and beech (130 pieces) wood from three forest districts within the territory of the Regional Directorates of the State Forests (RDSF) of Łódź, Lublin and Kraków. As a result of a comparison of both classification systems, it was proved that in the case of pine wood classified according to EU norms, the shares of the number of pieces and volume in classes B and C decreased, whereas they increased in class D when compared with Polish classification. Analogically, in the case of beech wood, a decrease in the share of the number of pieces and volume in classes A, B and D, and an increase in class C were recorded. Among the most common defects that influence the classification of both sorts of wood, open and burl knots as well as curvatures are recognised, while in the case of beech wood, shakes and galls (disease T stains) are encountered. The results of the classification determined differences in the wood value. According to the pricelists for wood standing in forest districts where the raw wood under investigation originated, it was established that the value of the pine wood classified according to the EU norm decreased by ca. 7.6% when compared with the value estimated using the Polish norm. The value of the beech wood was nearly identical in both cases, which was mainly due to the higher share of wood of class C and lower share of class D upon applying the EU standards, in comparison with the Polish classification system.
Źródło:
Drewno. Prace Naukowe. Doniesienia. Komunikaty; 2014, 57, 193
1644-3985
Pojawia się w:
Drewno. Prace Naukowe. Doniesienia. Komunikaty
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pine wilt disease - a threat to pine forest in Europe
Autorzy:
Suzuki, K
Powiązania:
https://bibliotekanauki.pl/articles/41424.pdf
Data publikacji:
2002
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
plant disease
pine wilt disease
wilting mechanism
disease control
pine stand
nematode
Europe
pine wood
Bursaphelenchus xylophilus
pine forest
Opis:
Pine wilt disease caused by pine wood nematodes is endemic to North America. Pine wood nematodes have already spread to East Asia, including China, Taiwan and Korea in addition to Japan. The pine wood nematode, Bursaphelenchus xylophilus, was discovered in Portuguese pine forests in 1999. If it were to become established in the pine forests in Europe, it could become one of the most serious threat to coniferous forests worldwide.
Źródło:
Dendrobiology; 2002, 48
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of the North Atlantic Oscillation on the potential distribution areas of Bursaphelencus xylophilus in Europe based on climatological reanalysis data
Autorzy:
Somfalvi-Toth, K.
Keszthelyi, S.
Powiązania:
https://bibliotekanauki.pl/articles/2082798.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Bursaphelencus xylophilus
distribution
ECMWF ERA5 reanalysis dataset
NAO
pine wood nematode
temperature
Opis:
Pine wood nematode (Bursaphelenchus xylophilus) (Aphelenchida: Parasitaphelencidae) is one of the most harmful agents in coniferous forests. The most important vectors of pine wood nematode are considered to be some Monochamus species (Col.: Cerambycidae), which had been forest insects with secondary importance before the appearance of B. xy- lophilus. However, the continuous spreading of the nematode has changed this status and necessitated detailed biological and climatological investigation of the main European vec- tor, Monochamus galloprovincialis. The potential distribution area of M. galloprovincialis involves those areas where the risk of the appearance of pine wood nematode B. xylophilus is significant. The main objective of our analysis was to obtain information about the in- fluencing effects of North Atlantic Oscillation (NAO) on the potential European range of B. xylophilus and its vector species M. galloprovincialis based on the connection between the mean temperature of July in Europe, the distribution of day-degrees of the vector and the NAO index. Our assessment was based on fundamental biological constants of the nematode and the cerambycid pest as well as the ECMWF ERA5 Global Atmospheric Rea- nalysis dataset. Our hypothesis was built on the fact that the monthly mean temperature had to exceed 20°C in the interest of an efficient expansion of the nematode. In addition, the threshold temperature of the vector involved in the calculations was 12.17°C, while the accumulated day-degree (DD) had to exceed the annual and biennial 370.57°DD for univoltine and semivoltine development, respectively. Our finding that a connection could be found between a mean temperature in July above 20°C and NAO as well as between the accumulated day-degrees and NAO can be the basis for further investigations for a reliable method to forecast the expansion of pine wood nematode and its vector species in a given year.
Źródło:
Journal of Plant Protection Research; 2020, 60, 2; 215-219
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Resistograph investigation of Scots pine wood utility poles in the State Museum at Majdanek
Autorzy:
Oryciński, Wojciech
Krajewski, Krzysztof
Kozakiewicz, Paweł
Powiązania:
https://bibliotekanauki.pl/articles/24072047.pdf
Data publikacji:
2019
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
Scots pine wood
natural durability
resistography
wooden pole
protection of monuments
Majdanek
Opis:
Resistograph investigation of Scots pine wood utility poles in the State Museum at Majdanek. Any activity relative to the protection of monuments is determined by the requirements of fidelity and authenticity in the preservation of the place and landscape. On the site of the State Museum at Majdanek, the former infrastructure of the concentration camp has been reconstructed. An element there of are pine wood utility poles.The present research project involved an assessment of their state of preservation with the method of resistography. The poles were subjected to inspection and preliminary acoustic assessment by means of tapping. Resistograph drillings were made radially, perpendicularly to the side surface of the poles, at various heights. A number of the poles have been found to be highly degraded in their sapwood part, which threatens their stability – these poles require immediate replacement. The principal cause of the degradation areactive feeding grounds of European house borer.The results of the research confirmed the effectiveness of resistographyin onsite assessment of the state of preservation of wooden poles.
Badania rezystograficzne sosnowych słupów teletechnicznych na terenie Państwowego Muzeum na Majdanku. Na terenie Państwowego Muzeum na Majdanku częściowo odtworzono dawną infrastrukturę obozu. Jednym z jej elementów są sosnowe słupy teletechniczne. W ramach niniejszej pracy oceniono stan ich zachowania z wykorzystaniem metody rezystograficznej. W pierwszej kolejności obiekty poddano oględzinom pod kątem spełnienia ramowych warunków technicznych na słupy teletechniczne oraz wstępnej ocenie metodą dźwiękową przez opukiwanie, a także pomiarom wilgotności drewna. W wytypowanych 20 słupach dokonano średnicowych wierceń rezystografem w ich przekrojach poprzecznych na różnych wysokościach. Na postawie analizy danych z rezystografu stwierdzono, że część słupów jest silnie zdegradowana w części bielastej, co grozi utratą ich stateczności – słupy te wymagają natychmiastowej wymiany. Głównym czynnikiem powodującym degradację są aktywne żerowiska larw spuszczela pospolitego, które znalazły tam dogodne warunki bytowania. W ramach podjętych badań potwierdzono przydatność i skuteczność metody resystograficznej do terenowej oceny stanu zachowania słupów drewnianych.
Źródło:
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology; 2019, 108; 58--67
1898-5912
Pojawia się w:
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of polymethyl methacrylate impregnation on mechanical properties of pine wood degraded by fungi
Wpływ nasycania polimetakrylanem metylu na właściwości mechaniczne drewna sosny zdegradowanego przez grzyby
Autorzy:
Jankowska, A.
Krajewski, K.
Tarasiuk, S.
Powiązania:
https://bibliotekanauki.pl/articles/52776.pdf
Data publikacji:
2010
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna
Tematy:
polymethyl methacrylate
impregnation
mechanical property
pine wood
degradation
fungi
synthetic resin
wood degradation
wood impregnation
conservation
Opis:
This paper presents results of investigations into possibility of using polymethyl methacrylate to reinforce wood degraded by Phellinus pini (Thore) Fr. fungus. It was found that impregnation of wood with the resin causes an increase in mechanical properties. Nevertheless this increase is relatively greater for wood degraded by biological agents than for undamaged wood. The behaviour of wood-resin system after artificial ageing in laboratory conditions was observed. The strength of wood treated with the resin was lower after artificial ageing than the strength of wood without ageing. Similar tendencies of changes were observed both in the case of wood degraded by biological agents and in the case of undamaged wood.
Przedstawiono wyniki badań nad możliwościami wykorzystania polimetakrylanu metylu do wzmacniania drewna zdegradowanego przez grzyba Phellinus pini (Thore) Fr. Zaobserwowano, że impregnacja drewna żywicą powoduje wzrost właściwości mechanicznych, niemniej jednak wzrost ten jest relatywnie wyższy w przypadku drewna zdegradowanego przez czynniki biologiczne, aniżeli w przypadku drewna nieuszkodzonego. Badano zachowanie się układu drewno – żywica po poddaniu go sztucznemu starzeniu w warunkach laboratoryjnych. Po procesie sztucznego starzenia wytrzymałość drewna nasyconego żywicą obniżyła się w porównaniu z wytrzymałością drewna niepoddanego starzeniu. Podobne tendencje zmian zaobserwowano zarówno dla drewna zdegradowanego przez czynniki biologiczne, jak i dla drewna nieuszkodzonego.
Źródło:
Drewno. Prace Naukowe. Doniesienia. Komunikaty; 2010, 53, 183
1644-3985
Pojawia się w:
Drewno. Prace Naukowe. Doniesienia. Komunikaty
Dostawca treści:
Biblioteka Nauki
Artykuł

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