books.google.com - The present contribution to North American Herpetology is a prodromus of a general work on that subject, undertaken some years ago at the request of the Secretary of the Smithsonian Institution. The material which has been accumulating in the museum of that Institution has offered great advantages for...http://books.google.com/books/about/Check_list_of_North_American_Batrachia_a.html?id=WagKAAAAIAAJ&utm_source=gb-gplus-shareCheck-list of North American Batrachia and Reptilia
