[HYGIENIC EVALUATION OF INDUSTRIAL TRAINING OF STUDENTS AT DAIRY FARMS].
D000383:Agriculture; D003612:Dairying; D006801:Humans; D007221:Industry; D013334:Students; D014586:USSR; D014829:Vocational Education
DAIRYING; USSR; VOCATIONAL EDUCATION
GIGIENICHESKAIA OTSENKA PROIZVODSTVENNOGO OBUCHENIIA SHKOL'NIKOV NA MOLOCHNYKH FERMAKH.