International Conference of Mine-Experiment Stations: Pittsburgh, Pennsylvania, U.S.A., September 14-21, 1912.

Author:	Rice, George S.
Year:	1914
Document Type:	N/A
Series:	United States Bureau of Mines Reports
Report Number:	Bulletin 82
Link:	https://digital.library.unt.edu/ark:/67531/metadc12849/