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| | Ed Rogers Rare & Out of Print Books - Rare Paleontology Books (Site not responding. Last check: 2007-10-01) |
 | | With the support of Thomas Penn and Lord Baltimore; he measured the first accurate degree of latitude in Pennsylvania, made pioneering astronomical observations, uncluding an eclipse of the moon, and the transit of Venus. |
| | Cope, Edward D. and Matthew, William D.; Hitherto Unpublished Plates of Tertiary Mammalia and Permian Vertebrata prepared under the direction of E. Cope for the United States Geological Survey of the Territories. |
| | Cope, Edward D.; New and Little Known Paleozoic Fishes and On Cyphornis, an Extinct Genus of Birds and Extinct Bovidae, Canidae and Felidae from the Pleistocene of the Plains. |
| www.geology-books.com /newcatalog.html (16765 words) |
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