[MORBIDITY OF MEDICAL WORKERS OF THE MEDICAL AND SANITARY DIVISION AT THE CHELIABINSK TRACTOR FACTORY AND TASKS FOR THE REDUCTION OF MORBIDITY].
D006281:Health Occupations; D006282:Health Personnel; D006801:Humans; D009017:Morbidity; D009784:Occupational Diseases; D009787:Occupational Medicine; D014586:USSR
HEALTH OCCUPATIONS; INDUSTRIAL MEDICINE; OCCUPATIONAL DISEASES; USSR
ZABOLEVAEMOST' MEDRABOTNIKOV MEDSANCHASTI CHELIABINSKOGO TRAKTORNOGO ZAVODA I ZADACHI PO EE SNIZHENIIU.