Investigations of explosives used in coal mines,
by Clarence Hall, W.O. Snelling, and S.P. Howell, with a chapter on the natural gas used at Pittsburgh, by G.A. Burrell, and an introduction by Charles E. Munroe.

APA Citation

Hall, C., Munroe, C. E. (Charles Edward)., Burrell, G. A. (George Arthur)., Howell, S. P., Snelling, W. Otheman. (1912). Investigations of explosives used in coal mines. Washington: Govt. print. off..

MLA Citation

Snelling, W. Otheman, et al.. Investigations of Explosives Used In Coal Mines. Washington: Govt. print. off., 1912.

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