William Edward Duellman Kitapları

A Distributional Study of the Amphibians of the Isthmus of Tehuantepec, México

William Edward Duellman

Descriptions of Two Species of Frogs, Genus Ptychohyla
Studies of American Hylid Frogs, V

William Edward Duellman

The Amphibians and Reptiles of Michoacán, México

William Edward Duellman

A New Subspecies of Lizard, Cnemidophorus sacki, from Michoacán, México

William Edward Duellman

The Genera of Phyllomedusine Frogs (Anura: Hylidae)

William Edward Duellman

A Synopsis of Neotropical Hylid Frogs, Genus Osteocephalus

William Edward Duellman

Middle American Frogs of the Hyla microcephala Group

William Edward Duellman

A Taxonomic Study of the Middle American Snake, Pituophis deppei

William Edward Duellman

A Review of the Frogs of the Hyla bistincta Group

William Edward Duellman

A Review of the Middle American Tree Frogs of the Genus Ptychohyla

William Edward Duellman

Amphibians and Reptiles of the Rainforests of Southern El Petén, Guatemala

William Edward Duellman