[50 years of state legislation on sanitary protection of bodies of water in the USSR].
D049673:History, 20th Century; D007878:Legislation as Topic / Q000266:history*; D012499:Sanitation; D014586:USSR; D014876:Water Pollution / Q000517:prevention & control*; D014881:Water Supply
50 let gosudarstvennomu zakonodatel'stvu po sanitarnoĭ okhrane vodoemov v SSS.