Geologic sections of Elm river mine (contact copper co.), T. 52 N., R. 36 W.
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| Main Author: | |
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| Format: | Map |
| Language: | English |
| Published: |
U. S. Geological Survey
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| Series: | Professional paper 144 |
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| Physical Description: | 1 mapa p&b 28,00x41,50 cm |
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