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Problemi Na Khigienata|January 1, 1992
[The hygienic assessment of the organization of the vocational study practice of students training for the job of power-generating unit operator]S ShpangenbergProblemi Na Khigienata|January 1, 1992
[The evaluation of the nitrate content in river waters]G Gopina, S Mladenova, V VŭdevaProblemi Na Khigienata|January 1, 1992
[Changes in the thyroid and other internal organs of experimental animals exposed to a drinking regimen with a high nitrate content]P Gatseva, S Marinova, L VŭrtigovaProblemi Na Khigienata|January 1, 1992
[The assessment of the general functional status and of the psychosomatic complaints of workers at hydroelectric power plants]S Danev, E Dapov, E Pavlov, et al.Problemi Na Khigienata|January 1, 1992
[Changes in the auditory threshold of workers exposed to the combined action of noise and local vibrations]E Ivanovich, L GoranovaProblemi Na Khigienata|January 1, 1992
[Body thermal status under low-temperature conditions in brewing production]L Vasileva-Todorova, I Dimitrova-TonevaProblemi Na Khigienata|January 1, 1988
[Current immunologic and functional research on the skin in occupational contact dermatitis]N Madzhunov, K NiakolovProblemi Na Khigienata|January 1, 1990
[The evaluation of the adaptation of pupils starting instruction at 6 years old to new academic programs by using a computer analysis of cardiac variability]N Semova, A Manolova, B MitevaProblemi Na Khigienata|January 1, 1990
[A method for the quantitative evaluation of the probability of ischemic heart disease in epidemiological research on workers exposed to harmful effects]T Popov, K KotsevaProblemi Na Khigienata|January 1, 1990
[Biphasic allergic reactions in occupational bronchospastic diseases]F KŭuPageof 49