[Main trends and stages in the development of hygienic science in sanitary protection of water reservoirs during 50 years of Soviet power].
D049673:History, 20th Century; D006920:Hygiene / Q000266:history*; D012499:Sanitation / Q000266:history; D014586:USSR; D014876:Water Pollution / Q000266:history*; D014881:Water Supply
Osnovnye napravleniia i étapy razvitiia sovetskoĭ gigienicheskoĭ nauki v sanitarnoĭ okhrane vodoemov za 50 let Sovetskoĭ vlasti.