Paleontological bulletin / by Edward D. Cope Cope, E. D. (Edward Drinker), 1840-1897 creator text series [Philadelphia s.n.] 1872-1884 1872 1884
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ENG Paleontology Vertebrates, Fossil Museum of Comparative Zoology--Biodiversity Heritage Library digitization project https://www.biodiversitylibrary.org/bibliography/53688 13182031 OBE