Gases found in coal mines /
by George A. Burrell and Frank M. Seibert.

APA Citation

Burrell, G. A. (George Arthur)., Seibert, F. M. (Frank Meyers)., United States. Bureau of Mines. (1914). Gases found in coal mines. 3rd ed. Washington, D.C.: U.S. G.P.O..

MLA Citation

Burrell, G. A. (George Arthur), b. 1882, Frank M. (Frank Meyers) Seibert, and United States. Bureau of Mines. Gases Found In Coal Mines. 3rd ed. Washington, D.C.: U.S. G.P.O., 1914.