[Scientific cooperation of the Comecon member countries in protecting the environment].
D002031:Bulgaria; D003604:Czechoslovakia; D004782:Environmental Health; D004787:Environmental Pollution / Q000517:prevention & control*; D005859:Germany, East; D006814:Hungary; D007391:International Cooperation; D011044:Poland; D012383:Romania; D014586:USSR
Nauchnoe sotrudnichestvo stran--chlenov SEV po okhrane okrushaiushcheĭ sredy.