Fossil plants from the Aspen shale of southwestern Wyoming/
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| Format: | Book |
| Language: | English |
| Published: |
Washington:
United States National Museum,
1933
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| Item Description: | Reprint from: The Proceedings of the United States National Museum, vol. 82, art. 12 |
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| Physical Description: | 10 p. : ill., pl. ; 23 cm. |