Saving gold by means of corduroy / by M.W. von Bernewitz.
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| Format: | Government Document Book |
| Language: | English |
| Published: |
Washington, DC :
U.S. Dept. of the Interior, Bureau of Mines,
1939.
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| Series: | Information circular (United States. Bureau of Mines) ;
7085. |
| Subjects: |
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