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Problemi Na Khigienata|January 1, 1990
[An economic analysis of the morbidity with temporary loss of work capacity in the electrolysis shop of a nonferrous metallurgical engineering combine]I PetrovProblemi Na Khigienata|January 1, 1990
[The effect of electrochemical silver on the microbiological qualities of drinking water]V Metodiev, N BozhilovaProblemi Na Khigienata|January 1, 1990
[A hygienic study of new raw materials for cosmetic agents and household chemical preparations]I Iordanov, A Baĭnova, L ChipilskaProblemi Na Khigienata|January 1, 1990
[The assessment of the vibration load in tractor drivers]L Goranova, E IvanovichProblemi Na Khigienata|January 1, 1990
[Epidemiological studies on the manufacture of cross-linked polyethylene]L Khankova, A Mikhaĭlova, V Khristeva, et al.Problemi Na Khigienata|January 1, 1988
[Experimental studies on changes in cerebral bioelectrical activity during combined exposure to benzene and tobacco smoke]G Armianov, Zh KhalkovaProblemi Na Khigienata|January 1, 1988
[Diseases of the nose and paranasal sinuses in workers of the woodworking industry]A SavovProblemi Na Khigienata|January 1, 1988
[Hygiene research in solving the health aspects of urban development]E Efremov, M Chuchkova, L Lozanov, et al.Problemi Na Khigienata|January 1, 1988
[A new approach to setting hygienic pesticide standards]N Izmirova, F Kaloianova, G Kalinova, et al.Problemi Na Khigienata|January 1, 1984
[Changes in the volume of acquired and processed information of students with regard to age]V PisevPageof 49