Ash, S. H. (1941). Water problem in the Pennsylvania anthracite mining region. U.S. Dept of the Interior, Bureau of Mines.
Chicago Style (17th ed.) CitationAsh, S. H. Water Problem in the Pennsylvania Anthracite Mining Region. U.S. Dept of the Interior, Bureau of Mines, 1941.
MLA (8th ed.) CitationAsh, S. H. Water Problem in the Pennsylvania Anthracite Mining Region. U.S. Dept of the Interior, Bureau of Mines, 1941.
Warning: These citations may not always be 100% accurate.