Lower Chicontepec shale formation, photo 1
Description on back: Alozan shale or lower Chicontepec shale in Garces R. at Pastoria, on road to Tantoyuca. Aug. 2, 1920.
| Format: | Electronic |
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| Published: |
University of Alabama Libraries
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| Online Access: | http://purl.lib.ua.edu/108601 |