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    Tytuł:
    A study on respiratory problems and pulmonary function indexes among cement industry workers in Mashhad, Iran
    Analiza problemów ze strony układu oddechowego oraz wskaźników wydolności płuc wśród pracowników przemysłu cementowego w Mashhad w Iranie
    Autorzy:
    Rafeemanesh, Ehsan
    Alizadeh, Ashkan
    Afshari Saleh, Lahya
    Zakeri, Hosein
    Powiązania:
    https://bibliotekanauki.pl/articles/2164430.pdf
    Data publikacji:
    2015-09-14
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    narażenie zawodowe
    objawy oddechowe
    test wydolności płuc
    pył z cementu portlandzkiego
    Iran
    choroby zawodowe
    occupational exposure
    respiratory symptoms
    pulmonary function test
    Portland cement dust
    occupational diseases
    Opis:
    Background The respiratory system is the most vulnerable system in the cement industry. This study was conducted to determine the effects of occupational exposure to cement dust on the respiratory system more thoroughly. Material and Methods In this cross sectional study an interviewer-administered questionnaire on socio-demographic characteristics and respiratory symptoms was completed and pulmonary function tests were carried out on 100 exposed and 120 non-exposed workers at the cement factory in Mashhad, Iran. The data was statistically analyzed by SPSS 16. Results The mean of age and work duration in the exposed group was 37.5±6.3 and 10.7±5.4 years compared with the non-exposed group that was 36.1±7.1 and 10.1±5.7 years, respectively. Levels of exposure to inhalable cement dust in the exposed group were 23.13 mg/m³ (higher than national occupational exposure limits for such particles). Among the exposed group, respiratory symptoms as cough (6% vs. 0.8% of the non-exposed) and sputum (7% vs. 0.8% of the nonexposed) were significantly more prevalent (p < 0.05). Forced expiratory flow 25–75% (FEF25–75%) was significantly lower in the exposed workers compared with non-exposed ones (p < 0.05). Also forced expiratory volume in 1 s / forced vital capacity (FEV₁/FVC) and FEF25–75% had a reverse correlation with the length of employment (p = 0.000 and p = 0.003, respectively). Conclusions The findings of this study showed that occupational exposure to cement dust could be a significant factor of respiratory system dysfunction. Strict implementation of a respiratory protection program is recommended in cement industries. Med Pr 2015;66(4):471–477
    Wstęp Układ oddechowy jest tym najbardziej narażonym w przypadku pracy w przemyśle cementowym. Poniższe badanie miało na celu precyzyjne określenie wpływu na układ oddechowy narażenia zawodowego na pył cementowy. Materiał i metody W ramach analizy przekrojowej 100 narażonych oraz 120 nienarażonych na pył pracowników fabryki cementu w Mashhad w Iranie wypełniło kwestionariusz na temat cech społeczno-demograficznych oraz objawów oddechowych, a także poddało się testom wydolności płuc. Otrzymane dane zostały przeanalizowane statystycznie za pomocą SPSS 16. Wyniki Średnia wieku oraz czas zatrudnienia dla grupy badanej wyniosły odpowiednio 37,5±6,3 roku oraz 10,7±5,4 roku, a dla grupy porównawczej 36,1±7,1 roku oraz 10,1±5,7 roku. Poziom narażenia na działanie wdychanego pyłu cementowego w grupie badanej wyniósł 23,13 mg/m³ i przekraczał dozwoloną krajową normę narażenia zawodowego na te cząstki. W grupie badanej takie objawy oddechowe, jak kaszel (6% vs 0,8% w grupie porównawczej) i plwocina (7% vs 0,8%) znacznie przeważały nad innymi (p < 0,05). Wymuszony przepływ wydechowy 25–75% (FEF25–75%) odnotowano na znacznie niższym poziomie w przypadku narażonych pracowników w porównaniu do tych nienarażonych (p < 0,05). Także stosunek natężonej objętości wydechowej pierwszosekundowej do natężonej pojemności życiowej (FEV₁/FVC) oraz FEF25–75% wskazywały na odwrotną korelację z długością zatrudnienia (odpowiednio: p = 0,000 i p = 0,003). Wnioski Narażenie zawodowe na pył cementowy może być ważnym czynnikiem powodującym dysfunkcję układu oddechowego. Ścisłe przestrzeganie programu ochrony układu oddechowego jest zalecane w przemyśle cementowym. Med. Pr. 2015;66(4):471–477
    Źródło:
    Medycyna Pracy; 2015, 66, 4; 471-477
    0465-5893
    2353-1339
    Pojawia się w:
    Medycyna Pracy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of Workers’ Exposure to Methylene Diphenyl Diisocyanate (MDI) in an Automobile Manufacturing Company, Iran
    Autorzy:
    Kakooei, H.
    Shahtaheri, S. J.
    Karbasi, H.- A.
    Powiązania:
    https://bibliotekanauki.pl/articles/90901.pdf
    Data publikacji:
    2006
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    occupational exposure
    MDI
    respiratory symptoms
    spectrophotometer
    spirometer
    zagrożenia chemiczne
    przemysł motoryzacyjny
    Iran
    spirometria
    narażenie zawodowe
    Opis:
    Evaluation of personal inhalation exposure to methylene diphenyl diisocyanate (MDI) among 39 employees, working in the window fixation and window glue processes in an automobile manufacturing company was performed. This study was conducted for both case and control groups. After sampling and sample preparation processes, MDI was determined with a UV-VIS spectrophotometer at 590 nm; the lung function was assessed with a digital spirometer, too. The average concentration of MDI in the window fixation, and window glue workplaces were 34.53 and 27.37 μg/m3, respectively, which was lower than the threshold limit value (TLV) recommended by the American Conference of Governmental Industrial Hygienists (ACGIH) (51 μg/m3). Respiratory symptoms in the exposed group were significantly different compared to the unexposed group (p < .05). Lung capacities in the case group were lower than in the control group (p < .05). Therefore, MDI can be easily measured making it possible to evaluate the adverse effects caused by occupational exposure.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2006, 12, 4; 443-449
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Identification of cross-reactive carbohydrate determinants in subjects reporting work-related respiratory symptoms
    Autorzy:
    Wiszniewska, Marta
    Zgorzelska-Kowalik, Joanna
    Nowakowska-Świrta, Ewa
    Walusiak-Skorupa, Jolanta
    Powiązania:
    https://bibliotekanauki.pl/articles/2177032.pdf
    Data publikacji:
    2015-02-24
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    occupational allergy
    cross-reactive carbohydrate determinants
    CCDs
    work-related respiratory symptoms
    Opis:
    Introduction: The role of cross-reactive carbohydrate determinants (CCDs) in diagnostics of occupational allergy remains unclarified and its clinical relevance is still questioned. The aim of the study was to assess the frequency of positive response to CCDs in the subjects with suspected occupational allergy and the relationship between other diagnostic test results and final diagnosis. Material and methods: The study group included 201 patients. They underwent clinical examination, skin prick test (SPT) to common and occupational allergens, specific serum immunoglobulin (sIgE) determinations, spirometry and specific inhalation challenge test. Moreover, sIgE to CCDs from bromelain was assessed in all subjects. Results: Occupational respiratory allergy was recognized in 64.3% of CCD-positive and 52.4% of CCD-negative patients. Positive SPT results to common and occupational allergens were found in 64.3% and 35.7% of CCD-positive subjects, respectively. In all subjects with CCDs, the sIgE to grass pollens as well as to occupational allergens were detected. The total IgE level > 100 kU/l was significantly associated with the presence of sIgE to CCDs. Conclusions: sIgE to CCDs were found in 7% of subjects suspected to suffer from occupational respiratory allergy. The presence of CCDs is not significantly associated with occupational respiratory allergy. It is also not more frequent in subjects reporting work-related respiratory symptoms in whom occupational allergy was not confirmed. The elevated total IgE level was related with CCD positivity. In patients with suspected occupational allergy, the presence of sIgE to CCDs in serum did not indicate the irrelevance of positive sIgE to occupational allergens.
    Źródło:
    International Journal of Occupational Medicine and Environmental Health; 2015, 28, 1; 90-101
    1232-1087
    1896-494X
    Pojawia się w:
    International Journal of Occupational Medicine and Environmental Health
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Occupational exposure to second hand smoke and respiratory and sensory symptoms: A cross-sectional survey of hospital workers in Egypt
    Autorzy:
    Radwan, Ghada
    Latif, Sahar
    Amin, Nahla
    Galal, Dalia
    Aziz, Maha
    Attia, Ehab
    Powiązania:
    https://bibliotekanauki.pl/articles/2178787.pdf
    Data publikacji:
    2014-03-22
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    second hand smoke
    respiratory and sensory irritation symptoms
    attitudes
    smoke-free policies
    Opis:
    Objective: Exposure to Second Hand Smoke (SHS) has been associated with an increased risk of respiratory symptoms, upper and lower respiratory tract diseases and an increased risk of asthma and chronic obstructive pulmonary disease. The majority of cases of mortality and morbidity is attributable to exposure of adults to SHS and is related to cardiovascular diseases and lung cancer. In Egypt, comprehensive smoke-free laws exist, however, in many workplaces they are poorly enforced consequently exposing workers to the detrimental health hazards of SHS. We aimed at determination of workplace exposure to Second Hand Smoke (SHS) and its association with respiratory and sensory irritation symptoms in hospital workers in Port-said governorate in Egypt. Material and methods: A cross-sectional face to face survey was conducted by the use of a standardised questionnaire among 415 adult hospital workers; representing 50% of all employees (81% response rate); recruited from 4 randomly selected general hospitals in Port-said governorate in Egypt. Results: All hospitals employees reported exposure to SHS - on average 1.5 (SD = 2.5) hours of exposure per day. After controlling for potential confounders, exposure to SHS at work was significantly associated with an increased risk of wheezes (OR = 1.14, p < 0.01), shortness of breath (OR = 1.17, p < 0.01), phlegm (OR = 1.23, p < 0.01), running and irritated nose (OR = 1.14, p < 0.01) as well as a sore, scratchy throat (OR = 1.23). Conclusions: These findings point out that workplace exposure to SHS is evident in hospitals in Port-said governorate and that workers are adversely affected by exposure to it at work. This underlines the importance of rigorous enforcement of smoke-free policies to protect the workers' health in Egypt.
    Źródło:
    International Journal of Occupational Medicine and Environmental Health; 2014, 27, 1; 60-70
    1232-1087
    1896-494X
    Pojawia się w:
    International Journal of Occupational Medicine and Environmental Health
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pulmonary function of jute mill workers from West Bengal, India
    Autorzy:
    Mandal(Majee), A.
    Majumder, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1914021.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Medyczny w Białymstoku
    Tematy:
    pulmonary function
    jute workers restrictive/obstructive respiratory symptoms
    odds ratio
    Opis:
    Background: Jute industry workers constantly exposed themselves to jute dust and are at risk of impairment of lung function. Investigation on various studies revealed the effects of exposure to jute dust but limited studies so far undertaken regarding its bearing on pulmonary function of jute workers of West Bengal,India. Purpose: To evaluate the respiratory status of jute mill workers of West Bengal exposed to occupational hazards. Materials and Methods: This cross sectional study was conducted on 203 male jute mill workers of age range 18 – 60 yrs. from West Bengal and a control group of 141 men of similar age .Dynamic pulmonary function parameters were carried out including physical parameters, respiratory abnormalities, year of exposure and smoking history. Results: FVC, FEV1, FEF 200-1200 and PEFR values of higher age group non smoker of low dust zone were significantly higher in comparison to the non smoker of high dust zone. The prevalence of chest tightness was 33.49% and liver dysfunction was 41.9% in dusty zone workers of jute mill in comparison to less dusty zone. Again, incidence of chest tightness and cough was highest (35.44%) in higher age group workers and prevalence of byssinosis like symptoms and chronic bronchitis was 30- 37% after 10 – 30years of exposure. But occurrence of bronchial asthma was 11.9% in workers of greater than 20 years of exposure. Prevalence of all the above respiratory abnormalities was higher among smokers than non-smokers. Conclusions: Concentration of jute dust exposure had been associated with decrease in FVC, FEV1, and PEFR with a higher risk of developing chronic bronchitis, bronchial asthma, byssinosis and other respiratory symptoms. This indicated high occupational health hazards which would create an alarming situation, if remained unchecked.
    Źródło:
    Progress in Health Sciences; 2014, 4, 1; 7-17
    2083-1617
    Pojawia się w:
    Progress in Health Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Respiratory Morbidity Induced by Occupational Inhalation Exposure to High Concentrations of Wheat Flour Dust
    Autorzy:
    Neghab, M.
    Soltanzadeh, A.
    Alipour, A.
    Hasanzadeh, J.
    Alipour, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/90875.pdf
    Data publikacji:
    2012
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    flour dust
    occupational exposure
    respiratory symptoms
    functional impairments of the lungs
    Opis:
    Introduction. The main purpose of this study was to investigate the respiratory effects of exposure to high airborne concentrations of wheat flour dust. Methods. This cross-sectional study was carried out at a local wheat flour mill in Shiraz, southern Iran. Thirty-five male workers exposed to flour dust and 32 healthy male nonexposed employees were investigated. The prevalence of respiratory symptoms among them was evaluated and parameters of their pulmonary function were measured. Moreover, to assess the extent to which subjects were exposed to flour dust, airborne concentrations of its inhalable and respirable fractions were measured.Results. Airborne concentrations of dust exceeded current permissible level. The prevalence of regular cough, productive cough, wheezing, phlegm and dyspnea was significantly higher in exposed subjects than in nonexposed employees. Similarly, both acute and chronic significant (p < .05) decrements in most parameters of pulmonary function were noted. Conclusions. Our findings provide corroborative evidence to further support the notion that exposure to flour dust is associated with a significant increase in the prevalence of respiratory symptoms as well as ventilator disorders of the lungs.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2012, 18, 4; 563-569
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Respiratory symptoms and pulmonary functions before and after pesticide application in cotton farming
    Autorzy:
    Sak, Z.H.A.
    Kurtulus, S.
    Ocakli, B.
    Toreyin, Z.N.
    Bayhan, I.
    Yesilnacar, M.I.
    Akgun, M.
    Arbak, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/2081931.pdf
    Data publikacji:
    2018
    Wydawca:
    Instytut Medycyny Wsi
    Tematy:
    pesticides
    PM10
    PM2.5
    pulmonary functions
    respiratory symptoms
    Opis:
    Ojective. To investigate respiratory health problems related to pesticide exposure in the inhabitants of agricultural areas. Materials and method. This study included 252 participants prior to pesticide application and 66 participants from the first group after pesticide application across four cotton farms. Symptom questionnaires were filled out by participants and respiratory function tests were measured before and after pesticide exposure. In addition, PM10, PM2.5, air temperature, and humidity were measured in all four farming villages before and after pesticide administration. Results. PM10 and PM2.5 levels were significantly increased after pesticide application. After pesticide application, all participants’ nose, throat, eye, and respiratory complaints increased significantly. Expected forced vital capacity (FVC) and forced expiratory volume in one second (FEV1) percentage values decreased significantly. The rates of FVC and FEV1 values lower than 80% were 23.5% and 22%, respectively, before pesticide application, and this rate increased to 42.4% and 43.1%, respectively, after pesticide application. There was a significant negative correlation between PM10 levels and FVC, FEV1, and PEF values. After PM2.5 pesticide application, the risk of experiencing burning in the mouth, nose, and throat increased by 2.3-fold (OR: 2.316), 2.6-fold for burning symptoms in the eyes (OR: 2.593), 2.1-fold for wheezing (OR: 2.153), and 2.2-fold for chest tightness (OR: 2.211). With increased PM10 levels, the risk of chest tightness increased 1.1-fold (OR: 1.123). Conclusions. After pesticide administration, the respiratory health of the participants deteriorated. Performing pesticide applications in agriculture with harmless methods is the most important measure to be taken to protect public health
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2018, 25, 4; 701-707
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Respiratory symptoms of exposure to substances in the workplace among dental laboratory technicians
    Autorzy:
    Stoeva, Iliyana
    Powiązania:
    https://bibliotekanauki.pl/articles/2082668.pdf
    Data publikacji:
    2021-04-09
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    dust
    respiratory symptoms
    acrylic resins
    daily exposure
    atopic disorder
    dental technicians
    Opis:
    Background: As dental technicians are exposed to a variety of airborne chemicals that can act as irritants and sensitizers, and may give rise to work-related respiratory symptoms, the aim of this study was to estimate the prevalence of respiratory symptoms of exposure to substances in the workplace and associated risk factors in dental laboratory technicians. Material and Methods: A cross-sectional study was performed among 539 dental technicians in the Plovdiv region using a self-report questionnaire. A multiple logistic regression analysis was performed in order to investigate the relationship between sex, work experience, daily exposure to chemicals from the dental environment, and a history of atopic disorder with work-related respiratory symptoms. Results: A total of 539 dental technicians completed the questionnaire. The prevalence of self-reported work-related respiratory symptoms was 26.2%. Based on logistic regression, the most significant factors associated with work-related respiratory symptoms were daily exposure of >8 h (OR = 5.83, 95% CI: 1.96–17.34) and the lack of a ventilation system (OR = 4.26, 95% CI: 2.39–7.58). Dental technicians with work experience of <5 years more often reported work-related respiratory symptoms (OR = 1.83, 95% CI: 1.14–3.44) compared to those with long-term exposure of >20 years. A personal history of asthma (OR = 3.74, 95% CI: 1.39–10.07), allergic rhinoconjunctivitis (OR = 2.10, 95% CI: 1.29–3.41) and atopic dermatitis (OR = 2.32, 95% CI: 1.23–4.38) was also associated with work-related respiratory symptoms. Conclusions: The findings of this study suggest that work-related respiratory symptoms are frequent among dental technicians and occur early in their career. A more comprehensive study should be conducted throughout the country in order to estimate the prevalence, and to establish effective programs and techniques of preventing work-related respiratory symptoms in dental technicians. Med Pr. 2021;72(2):105–11
    Źródło:
    Medycyna Pracy; 2021, 72, 2; 105-111
    0465-5893
    2353-1339
    Pojawia się w:
    Medycyna Pracy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Relationship of Dust Exposure with Respiratory Disorders Symptoms Among Textile Industry Workers
    Autorzy:
    Berlian, Alifia Intan
    Setiani, Onny
    Sulistiyani, Sulistiyani
    Raharjo, Mursid
    Darundiati, Yusniar Hanani
    Powiązania:
    https://bibliotekanauki.pl/articles/24201788.pdf
    Data publikacji:
    2023
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    dust exposure
    respiratory symptoms
    textile industry
    Opis:
    Preliminary study of the total dust exposure in the textile industry of Semarang city is 233 μg/Nm3, which exceeds the quality standard. The high concentration of dust is influenced by increased productivity, so that it has the potential as a source of pollutants that can affect the respiratory system of workers. The purpose of this study was to determine the relationship between dust exposure and respiratory disorders symptoms in workers. The method used is a cross-sectional study with a sample size of 161 people and 6 points of dust measurement locations. The Modified Medical Research Council (MMRC) standardized questionnaire was used to collect data. The data were analyzed using the SPSS 24 with Chi square and Binary logistic regression tests to determine the relationship. The results showed that the average dust concentration exceeded the quality standard, namely 4 location points for PM2.5, 1 location point for PM10, and 2 location points for total dust. The average exposure to respirable dust is 3.93 μg/m3, which exceeds the quality standard. A total of 57% of workers experienced symptoms of respiratory disorders with the results of bivariate statistical analysis of 5 significant variables, namely PM2.5 (p = 0.021), PM10 (p = 0.002), total dust (p = 0.000), respirable dust (p = 0.002), and working period (p = 0.037). Meanwhile, the results of the binary logistic regression test had 2 significant variables, namely total dust (p = 0.000) and respirable dust (p = 0.006). The conclusion of this study is that total dust and respirable dust that exceed the quality standard have a higher risk of causing respiratory disorders symptoms with a probability of 71.6% and dust may be minimized by adding a pneumablo to each machine.
    Źródło:
    Journal of Ecological Engineering; 2023, 24, 3; 35--46
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Work-related respiratory symptoms among health centres cleaners: A cross-sectional study
    Autorzy:
    Lipińska-Ojrzanowska, Agnieszka
    Wiszniewska, Marta
    Świerczyńska-Machura, Dominika
    Wittczak, Tomasz
    Nowakowska-Świrta, Ewa
    Pałczyński, Cezary
    Walusiak-Skorupa, Jolanta
    Powiązania:
    https://bibliotekanauki.pl/articles/2178854.pdf
    Data publikacji:
    2014-06-21
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    cleaners
    occupational allergy
    work-related respiratory symptoms
    work-related asthma
    WRA
    Opis:
    Objectives: Several studies, mostly based on questionnaire-derived data, have shown an increased risk of allergic diseases, especially asthma, among cleaners. The risk factors and etiological mechanisms are still being investigated. Occupational exposure to various chemical and biological agents may induce specific sensitization and/or irritant effects. The aim of our study was to estimate the prevalence of work-related symptoms suggesting the presence of allergic disease reported by cleaners, and to relate them to the results of commercially available and standardized objective tests used for screening detection of occupational sensitization and chronic respiratory disorders. Material and Methods: A cross-sectional study was performed among 142 Polish workers of cleaning service in their workplaces. A detailed questionnaire, skin prick tests to common allergens and chemicals used by these workers for cleaning purposes (chloramine T, chlorhexidine, formaldehyde, glutaraldehyde, benzalconium chloride), total and specific serum IgE antibodies to disinfectants and rest spirometry were performed in all the subjects. Results: Fifty nine percent of all the subjects declared occurrence of at least 1 symptom suggesting allergic ailment during cleaning activities at work. Skin prick tests and specific serum IgE antibodies to disinfectants were negative in all the subjects. In 8 cases wheezing was detected during auscultation, but only in 5 of them obstructive pattern in rest spirometry was found. Conclusions: Occupational allergic causation of symptoms among cleaners could be less likely than work-related symptoms associated with exacerbations of new-onset or pre-existing respiratory diseases. Therefore, in this group of workers, mainly the non-specific irritant impact of chemicals on airways should be taken into consideration.
    Źródło:
    International Journal of Occupational Medicine and Environmental Health; 2014, 27, 3; 460-466
    1232-1087
    1896-494X
    Pojawia się w:
    International Journal of Occupational Medicine and Environmental Health
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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