United States. Bureau of Mines & Fields, H. H. (1973). Degasification of virgin Pittsburgh coalbed through a large borehole. U.S. Dept. of the Interior, Bureau of Mines.
Chicago Style (17th ed.) CitationUnited States. Bureau of Mines and H. H. Fields. Degasification of Virgin Pittsburgh Coalbed Through a Large Borehole. [Pittsburgh, Pa.]: U.S. Dept. of the Interior, Bureau of Mines, 1973.
MLA (9th ed.) CitationUnited States. Bureau of Mines and H. H. Fields. Degasification of Virgin Pittsburgh Coalbed Through a Large Borehole. U.S. Dept. of the Interior, Bureau of Mines, 1973.
Warning: These citations may not always be 100% accurate.