[V.I. Lenin on the protection of the external environment].
D003148:Communism / Q000266:history*; D004787:Environmental Pollution / Q000517:prevention & control*; D049672:History, 19th Century; D049673:History, 20th Century; D012425:Russia (Pre-1917); D014586:USSR
V.I. Lenin ob okhrane vneshneĭ sredy