Ore deposits of the Helena mining region, Montana /
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| Author / Creator: | Knopf, Adolph, 1882-1966 |
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| Imprint: | Washington, Govt. Print. Off., 1913. |
| Description: | 143 p. : ill., plates, fold. maps, diagrs. ; 24 cm. |
| Language: | English |
| Series: | U.S. Geological survey. Bulletin ; no. 527 Bulletin (Geological Survey (U.S.)) ; no. 527. |
| Subject: | |
| Format: | U.S. Federal Government Document Print Book |
| URL for this record: | http://pi.lib.uchicago.edu/1001/cat/bib/4079219 |
| Item Description: | Some of the plates printed on both sides of leaf. "Literature": p. 18-19. Includes index. |
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| Physical Description: | 143 p. : ill., plates, fold. maps, diagrs. ; 24 cm. |
