The copper-bearing rocks of Lake Superior [electronic resource] / by Roland Duer Irving.
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| Online Access: |
Full Text (via Gale) |
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| Other title: | 3rd annual report of the director of the U.S. Geological Survey. |
| Format: | Electronic eBook |
| Language: | English |
| Published: |
Washington :
G.P.O.,
1883.
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| Series: | Nineteenth Century Collections Online (NCCO): Science, Technology, and Medicine: 1780-1925.
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| Subjects: |