Mine inspection records study /
by George J. Conroy, Glenn Harrison, and Jack Simmons ; Pittsburgh Mining and Safety Research Center.
APA Citation
Conroy, G. J., Simmons, J., Harrison, G., United States. Bureau of Mines. (1976). Mine inspection records study. [Washington]: Dept. of the Interior, Bureau of Mines.
MLA Citation
Conroy, George J, Jack Simmons, Glenn Harrison, and United States. Bureau of Mines. Mine Inspection Records Study. [Washington]: Dept. of the Interior, Bureau of Mines, 1976.
Warning: These citations may not always be complete (especially for serials).