[All-Union conference on the problems of sanitary protection of water supply from pollution by sewage from coal industry].
D003031:Coal; D004787:Environmental Pollution; D007221:Industry; D012722:Sewage; D014876:Water Pollution / Q000517:prevention & control*; D014881:Water Supply
D003031:Coal; D012722:Sewage
WATER POLLUTION/prevention and control