[Trade unions and sanatarium-health resort affairs].
D006294:Health Resorts / Q000266:history*; D049673:History, 20th Century; D006782:Hospitals, Special / Q000266:history*; D007750:Labor Unions / Q000266:history*; D009787:Occupational Medicine / Q000266:history*; D014586:USSR
Profsoiuzy i sanatorno-kurortnoe delo.