331.82373 .E582i.c..8066 .
E.U.A. Bureau of Mines
Instruction handbook: fundamentals of accident prevention for coal-mine superv- . -- Washington: U.S. Dept. of the Interior, Bureau-, 1962. 146 p., 26 cm.
008030
Minas - Medidas de seguridad - Manuales
Tomlinson, Walter H.