Multiple-shift mechanical mining in some bituminous coal mines.
Progress report 2 /
by Albert L. Toenges and Frank A. Jones.
APA Citation
Toenges, A. L. (Albert Louis)., Jones, F. A., United States. Bureau of Mines. (1939). Multiple-shift mechanical mining in some bituminous coal mines. [Washington, D.C.]: U.S. Dept. of the Interior, Bureau of Mines.
MLA Citation
Toenges, Albert L. (Albert Louis), 1889-, Frank A Jones, and United States. Bureau of Mines. Multiple-shift Mechanical Mining In Some Bituminous Coal Mines. [Washington, D.C.]: U.S. Dept. of the Interior, Bureau of Mines, 1939.
Warning: These citations may not always be complete (especially for serials).