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The coal resources of McCone County, Montana,

By Collier, Arthur J..
Washington, U.S. Govt. Print. Off., 1939 .
vii, 80 p. incl. illus., tables, diagrs. , At head of title: United States Department of the Interior. Geological Survey. | Folded colored map (pl. 16) in pocket. 23 cm..

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Geology and mineral resources of Haskell County, Oklahoma,

By Oakes, Malcolm C..
Norman, 1948 .
134 p. , Prepared in cooperation between the Oklahoma Geological Survey and the Geological Survey, U.S. Dept. of the Interior. 23 cm..

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Geology and coal and natural gas resources of northern Le Flore County, Oklahoma.

By Knechtel, Maxwell M..
Norman, 1949 .
76 p. , Investigation conducted under cooperative agreement between the Oklahoma Geological Survey and the Geological Survey of the United States Department of the Interior. 23 cm..

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