[Remarkable dates in the history of hygiene and sanitation].
Voskresenskaia
N P
NP
Bylinskiĭ
E N
EN
D049672:History, 19th Century; D049673:History, 20th Century; D049674:History, 21st Century; D006920:Hygiene / Q000266:history; D016272:Occupational Health / Q000266:history*; D012426:Russia