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	1.	Directory of Montana mining properties. Compiled by Work projects administration, Mineral resources survey. (O.P. 65-1-91-24 W.P. 2986) In cooperation with the Mining association of Montana. by Mineral resources survey Mining association of Montana Series: Montana. State bureau of mines and geology. Memoir ; no. 20 Material type: Text; Format: print ; Literary form: Not fiction Publication details: Butte, Mont., Montana school of mines, 1940 Availability: No items available. Add to cart (remove)
	2.	Bibliography of the geology and mineral resources of Montana. Compiled by Works projects administration, Mineral resources survey. (O.P. 265-91-1-47 W.P. 3622) Cecil R. Waldron, supervisor; Roy H. Earhart, asst. supervisor. by Mineral resources survey Series: Montana. State bureau of mines and geology. Memoir ; no. 21 Material type: Text; Format: print ; Literary form: Not fiction Publication details: Butte, Mont., Montana School of mines, 1942 Availability: No items available. Add to cart (remove)
	3.	Directory of Montana oil and gas industry, compiled by Work projects administration, Mineral resources survey (O.P. 365-1-91-4 W.P. 3668) Carl J. Trauerman, former supervisor, Roy H. Earhart, state supervisor, Eggleston B. Emrick, asst. state supervisor. by Mineral resources survey Series: Montana. State bureau of mines and geology. Memoir ; no. 22 Material type: Text; Format: print ; Literary form: Not fiction Publication details: Butte, Mont., Montana school of mines, 1943 Availability: No items available. Add to cart (remove)

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