William E. Duellman

Littérature

A Taxonomic Study of the Middle American Snake, Pituophis deppei

William E. Duellman

Littérature

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

William E. Duellman

Littérature

A Review of the Frogs of the Hyla bistincta Group

William E. Duellman

Littérature

The Genera of Phyllomedusine Frogs (Anura Hylidae)

William E. Duellman