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Problemi Na Khigienata|January 1, 1996
[The dust factor of the work and adjacent environments in the working of manganese ore]R Lukanova, K Dinkova, N DanchevaProblemi Na Khigienata|January 1, 1996
[Psychosocial factors in the family environment of chronic patients and of healthy pupils of elementary school age]Ts Antonova, Ts PopivanovaProblemi Na Khigienata|January 1, 1996
[A national plan for action on the environment and health]M ChuchkovaProblemi Na Khigienata|January 1, 1996
[The toxicological characteristics of Gastrofenzin. II. Its subacute oral toxicity]A Mikhaĭlova, G Antov, Zh Khalkova, et al.Problemi Na Khigienata|January 1, 1989
[Adsorption of dyes as an indicator of the biological activity of mineral dust]N DanchevaProblemi Na Khigienata|January 1, 1985
[Health status of 1st- to 3d-grade pupils in a unified secondary polytechnical school entering school at different ages]E Bircheva, M PetrovaProblemi Na Khigienata|January 1, 1985
[Problems of the extracurricular regimen of pupils (1st to 3d grades)]S Shpangenberg, A UzunovaProblemi Na Khigienata|January 1, 1979
[Age characteristics and circadian biorhythm of the leukocytes in schoolchildren]M PetrovaProblemi Na Khigienata|January 1, 1979
[Reading and writing disorders in elementary school students with varying achievment]E BirchevaProblemi Na Khigienata|January 1, 1991
[Working conditions and morbidity with temporary loss of work capacity among metallurgists from Mill 300 of the Predmet firm--in Debelt]M Kasŭrov, N Khristova, M Kostova, et al.Pageof 49