List of permissible mine equipment approved during 1937 /
by L.C. Ilsley.
APA Citation
Ilsley, L. C. (Lee Clyde)., United States. Bureau of Mines. (1938). List of permissible mine equipment approved during 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 During 1937. Washington, D.C.: U.S. Dept. of the Interior, Bureau of Mines, 1938.
Warning: These citations may not always be complete (especially for serials).