[ABOUT SOME PROBLEMS OF OCCUPATIONAL MEDICINE AND HYGIENE IN THE GERMAN DEMOCRATIC REPUBLIC].
D005858:Germany; D005859:Germany, East; D006801:Humans; D006920:Hygiene; D009787:Occupational Medicine
GERMANY, EAST; INDUSTRIAL MEDICINE
O NIEKT'ORYCH PROBLEMACH MEDYCYNY I HIGIENY PRACY W NRD.