Investigations of Permissible Electric Mine Lamps

Investigations of Permissible Electric Mine Lamps 1930-1940

United States. Bureau of Mines, McHenry Mosier, William Henry Roadstrum, William Waugh Adams, M. E. Kolhos, Eugene Delos Gardner, Alva Britt Hooker, Virginia E. Wrenn, Charles George Maier, L. C. Ilsley, William Carroll Schroeder, Abraham Albert Berk, J. R. Thoenen, L. E. Geyer, M. G. Parry, S. L. Windes — 1942

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