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Problemi Na Khigienata|January 1, 1990
[The metal content of natural waters]S Gitsova, S Ianeva, S Mladenova
Problemi Na Khigienata|January 1, 1990
[Derivative spectroscopy and its use in sanitary hygiene control]I Benchev, R Vasileva
Problemi Na Khigienata|January 1, 1990
[The mycotoxicological and dust contamination of the air in plants for the preliminary processing of cotton and hemp]M Dimitrov, S Ivanova-Dzhubrilova, M Nikolcheva, et al.
Problemi Na Khigienata|January 1, 1990
[The effect of instruction with computers on the functional state of first-graders]N Semova, T S Strashimirova, V Kostova, et al.
Problemi Na Khigienata|January 1, 1990
[Problems of the health status of the youth from a student town]E Iotova, T Mineva, Ts Popivanova, et al.
Problemi Na Khigienata|January 1, 1990
[A test for determining hydrogen sulfide in waste waters]N Panova, M Ivanova
Problemi Na Khigienata|January 1, 1990
[Biochemical liver studies of workers in ethylenediamine production]A Mikhaĭlova, M Nosko, M Khandzhieva, et al.
Problemi Na Khigienata|January 1, 1987
[Nature and hygienic importance of industrial dust from the high-temperature processing of quartz]R Lukanova, G Duneva, T Tsvetanova
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