William E Duellman

Marsupial Frogs

Amphibians And Reptiles Of The Rainforests Of Southern El Petén, Guatemala

A Distributional Study Of The Amphibians Of The Isthmus Of Tehuantepec, Mexico

Liste Der Rezenten Amphibien Und Reptilien. Hylidae, Centrolenidae, Pseudidae

Descriptions Of New Hylid Frogs From Mexico And Central America