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Problemi Na Khigienata|January 1, 1986
[Natural immunity of the pupils in a secondary vocational and technical school for rubber and plastics]N Stamova, B Miteva, G Gencheva, et al.Problemi Na Khigienata|January 1, 1986
[Ecological and toxicological experiments with test guppies and Daphnia in research on the effect of pesticides in water]A Strateva, T TsankovaProblemi Na Khigienata|January 1, 1986
[Hygienic study and evaluation of textile materials with reduced combustibility with reference to the use of the new anti-inflammable preparations Pyrofix 2 and Torflam]S Uzunova, A Baĭnova, I Iordanova, et al.Problemi Na Khigienata|January 1, 1986
[Experimental research on the chronic inhalational toxicity of chloracetophon]A Mikhaĭlova, Kh Zaĭkov, L Ivanova-Chemishanska, et al.Problemi Na Khigienata|January 1, 1992
[An experimental evaluation of the acute and chronic oral toxicity of the antibiotic Bactericin for plant protection]G Antov, Kh Zaĭkov, Zh Khalkova, et al.Problemi Na Khigienata|January 1, 1992
[The hematological and biochemical changes in workers exposed to benzol]V Khristeva, A Mikhaĭlova, M Kasŭrov, et al.Problemi Na Khigienata|January 1, 1992
[Atmospheric pollution in the city of Ruse and its effect on the health of the population]K Basmadzhieva, S Tabakova, B Nikiforov, et al.Problemi Na Khigienata|January 1, 1992
[Lipid and mineral metabolism and morbidity with temporary loss of work capacity in miners]D Tsvetkov, N Tsacheva, L Goranova, et al.Problemi Na Khigienata|January 1, 1992
[The effect of chronic combined exposure to nickel and lead on the enzymatic indices in body uptake with the drinking water]Ts VodichenskaProblemi Na Khigienata|January 1, 1991
[Establishing the effect of electromagnetic energy on the health status of the population]M Chuchkova, A DozovaPageof 49