Department of the Interior. United States Geological Survey. George Otis Smith, Director. Water-supply paper 226. The pollution of streams by sulphite pulp waste -- A study of possible remedies

Geological Survey (U.S.). Geographical and Geological Survey of the Rocky Mountain Region (U.S.) Geographical Surveys West of the 100th Meridian (U.S.) Geological and Geographical Survey of the Territories (U.S.) United States. Department of the Interior

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