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Problemi Na Khigienata|January 1, 1986
[The hospital environment as a hygienic problem]M Chuchkova, S ToshkovProblemi Na Khigienata|January 1, 1986
[Changes in the peripheral blood of workers engaged in ethylbenzene-styrene and synthetic rubber and latex manufacture]V KhristevaProblemi Na Khigienata|January 1, 1976
[Polarographic method of determining phenol in the air]E Koen, G IvanovProblemi Na Khigienata|January 1, 1987
[Characteristics of work capacity of patients with silicosis occurring after stopping their work in exposure to dust]E PetrovaProblemi Na Khigienata|January 1, 1987
[Evaluation of the immune status of pupils of the Secondary Vocational-Technical School of Rubber and Plastics]M Stoĭnovska, B Miteva, N Stamova, et al.Problemi Na Khigienata|January 1, 1987
[Reactivity of the cardiovascular system of pupils from grades 1 to 3 to the new unified secondary vocational school]N SemovaProblemi Na Khigienata|January 1, 1987
[Experimental study and standardization of propanide in water]A Strateva, S Novakova, S Dinoeva, et al.Problemi Na Khigienata|January 1, 1987
[Improvement in the hygienic standards for radio-frequency electromagnetic fields in member countries of the COMECON]M IzraelProblemi Na Khigienata|January 1, 1982
[Histoautoradiographic analysis of the liver of albino rats treated with low doses of vinyl chloride]N Donchev, M Spasovski, L Krustev, et al.Problemi Na Khigienata|January 1, 1986
[Auditory-vestibular changes in workers in ferrous metallurgy manufacture]Zh Khalkova, G KostadinovaPageof 49