Catalogue of the specimens of snakes in the collection of the British museum - Gray, John Edward 1800 -1875 (Printed by order of the Trustees, 1849)

Catalogue raisonné des plantes qui croissent spontanément dans le département de la Dordogne. distribuées d'après le synopsis florae Germanicae et Helveticae du docteur G.D.J. Koch. Premire partie, Phanrogames - Des Moulins, Charles, 1798 -1875 (Th. Lafargue, 1840)

Centralblatt für Bakteriologie und Parasitenkunde (G. Fischer, 1891)

The Century dictionary : an encyclopedic lexicon of the English language: prepared under the superintendence of William Dwight Whitney - Whitney, William Dwight, 1827 -1894 (Century Co, 1889)

Cestodes - Braun, Max, 1850 -1930 (C.F. Winter, 1894)

A check list of North American amphibians and reptiles - Stejneger, Leonhard, 1851 -1943 (Harvard University Press, 1933)

A check list of North American amphibians and reptiles - Stejneger, Leonhard, 1851 -1943 (Harvard University Press, 1917)

Check-list of North American Batrachia and Reptilia with a systematic list of the higher groups and an essay on geographical distribution, based on the specimens contained in the U. S. National Museum - Cope, E. D. (Edward Drinker), 1840 -1897 (G.P.O, 1875)

A check-list of West Indian amphibians and reptiles - Schwartz, Albert, 1923 -1992 (Carnegie Museum of Natural History, 1975)

Checklist of CITES Species (1998)

Checklist of CITES Species and Annotated CITES Appendices and Reservations - Inskipp, Tim (CITES Secretariat, UNEP-WCMC, 2005)

Checklist of CITES Species: a reference to the appendices to the Convention on International Trade in Endangered Species of Wild Fauna and Flora (2003)

Checklist of CITES Species: a reference to the appendices to the Convention on International Trade in Endangered Species of Wild Fauna and Flora (1996)

Checklist of CITES Species: a reference to the appendices to the Convention on International Trade in Endangered Species of Wild Fauna and Flora (2001)