An annotated checklist and key to the amphibia of Mexico.
Washington: Smithsonian Institution, Bulletin 194,1950. Octavo, wrappers, few pale library stamps, edges uncut, good copy. More
Washington: Smithsonian Institution, Bulletin 194,1950. Octavo, wrappers, few pale library stamps, edges uncut, good copy. More
Lawrence, Kansas: University of Kansas, 1935. Octavo, black and white photographic plates, text illustrations. Bound in cloth with lettered spine, bookplate, signature, a good copy. The Kansas University Science Bulletin: Volume XXIII. More