List of permissible mine equipment :
approved to January 1, 1937 /
by L.C. Ilsley.

APA Citation

Ilsley, L. C. (Lee Clyde)., United States. Bureau of Mines. (1937). List of permissible mine equipment: approved to January 1, 1937. [Washington, D.C.]: U.S. Dept. of the Interior, Bureau of Mines.

MLA Citation

Ilsley, L. C. (Lee Clyde), 1880-, and United States. Bureau of Mines. List of Permissible Mine Equipment: Approved to January 1, 1937. [Washington, D.C.]: U.S. Dept. of the Interior, Bureau of Mines, 1937.

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