Author: | Allsman, Paul T. |
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Year: | 1938 |
Document Type: | USBI |
Issuing Agency: | United States Dept. of the Interior, Bureau of Mines, |
SUDOC: | I28.27:7029 |
Series: | Information Circular / Bureau of Mines ; |
Report Number: | 7029 |
Subject: | Copper mines and mining--Nevada--Clark County--Cost of operation |
Link: | https://hdl.handle.net/2027/mdp.39015077575861 |