[50 years of the People's Commissariat of Public Health and its sanitary organs].
D004813:Epidemiology / Q000266:history; D049673:History, 20th Century; D011635:Public Health Administration / Q000266:history*; D012499:Sanitation / Q000266:history; D014586:USSR
50 let narodnogo komissariata zdravookhraneniia i ego sanitarnykh organov.