Pre-Cambrian igneous rocks of the Unkar terrane, Grand Canyon of the Colorado, Arizona [electronic resource] / by Charles D. Walcott ; with notes on the petrographic character of the lavas, by Joseph Paxson Iddings.
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| Format: | Electronic eBook |
| Language: | English |
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[S.l. :
s.n.,
1894?]
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| Series: | Nineteenth Century Collections Online (NCCO): Science, Technology, and Medicine: 1780-1925.
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