Permian phosphate deposits of Montana, Idaho, Wyoming, and Utah : as compiled from maps of the Geological Survey /
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| Main Author: | |
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| Format: | Map |
| Language: | English |
| Published: |
Washington, D.C. :
U.S. Geological Survey,
1946
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| Series: | Strategic minerals investigations ;
preliminary map 3-198 |
| Subjects: | |
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