Catalogues of the reptiles obtained during the Explorations of the Parana, Paraguay, Vermejo and Uruguay Rivers, by Capt. Thos. J. Page, U.S.N.; and of those procured by Lieut. N. Michler, U.S. Top. Eng., Commander of the Expedition conducting the survey of the Atrato River
Cope, E. D. (Edward Drinker), 1840-1897
Proceedings of the Academy of Natural Sciences of Philadelphia
Philadelphia, Academy of Natural Sciences of Philadelphia,
Public domain. The BHL considers that this work is no longer under copyright protection.