Multiple-shift mechanical mining in some bituminous coal mines.
Progress report 1 /
by Albert L. Toenges and Robert L. Anderson.

APA Citation

Toenges, A. L., Anderson, R. L., United States. Bureau of Mines. (1938). 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, Robert L Anderson, 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, 1938.

Warning: These citations may not always be complete (especially for serials).