Corgan, J. A., & Mines, U. S. B. o. (1942). Dredging Pennsylvania anthracite.
Chicago Style (17th ed.) CitationCorgan, Joseph A., and United States. Bureau of Mines. Dredging Pennsylvania Anthracite. 1942.
MLA (8th ed.) CitationCorgan, Joseph A., and United States. Bureau of Mines. Dredging Pennsylvania Anthracite. 1942.
Warning: These citations may not always be 100% accurate.