Prevention and social constructivism.
Vasiliy V
VV
Vlassov
D001723:Birth Rate; D003148:Communism / Q000266:history; D049673:History, 20th Century; D049674:History, 21st Century; D006801:Humans; D008017:Life Expectancy; D011314:Preventive Health Services; D012426:Russia; D014586:USSR