[Hygienic problems of organizing the work training of the students of general schools].
D006801:Humans; D006920:Hygiene; D012426:Russia; D014829:Vocational Education; D014937:Work
Nekotorye gigienicheskie voprosy organizatsii trudovogo obucheniia uchashchikhsia obshcheobrazovatel'nykh shkol.