Encyclopedia of reptiles & amphibiansRichard George Zweifel, David Kirshner · First published 2003Open the Tome
Encyclopedia of AnimalsHarold G. Cogger, Joseph Forshaw, Edwin Gould Dr, Richard George Zweifel · First published 2001Open the Tome
Partition of the Australopapuan microhylid frog genus Sphenophryne with descriptions of new speciesRichard George Zweifel · First published 2000Open the Tome
Encyclopedia of reptiles & amphibiansHarold G. Cogger, Richard George Zweifel, David Kirshner · First published 1998Open the Tome
Australian Frogs of the Family Microhylidae (Bulletin of the American Museum of Natural History, Vol 182, Article 3)Richard George Zweifel · First published 1985Open the Tome
Two new hylid frogs from Papua New Guinea and a discussion of the Nyctimystes papua species groupRichard George Zweifel · First published 1983Open the Tome
Frogs and lizards from the Huon Peninsula, Papua New GuineaRichard George Zweifel · First published 1980Open the Tome
A new cryptic species of Microhylid frog (genus Cophixalus) from Papus New Guinea, with notes on related formsRichard George Zweifel · First published 1979Open the Tome
Variation in the scincid lizard Lipinia noctua and notes on other Lipinia from the New Guinea regionRichard George Zweifel · First published 1979Open the Tome
A new species of frog from Australia (Microhylidae, Cophixalus)Richard George Zweifel · First published 1977Open the Tome
Upper thermal tolerances of anuran embryos in relation to stage of development and breeding habitsRichard George Zweifel · First published 1977Open the Tome
Two new frogs of the genus Platymantis (Ranidae) from New BritainRichard George Zweifel · First published 1975Open the Tome
A revision of the frogs of the subfamily Asterophryinae, family MicrohylidaeRichard George Zweifel · First published 1972Open the Tome
Reproductive biology of Anurans of the arid SouthwestRichard George Zweifel · First published 1968Open the Tome
Results of the Puritan-American Museum of Natural History Expedition to Western MexicoRichard George Zweifel · First published 1960AdventureOpen the Tome
Variation in and distribution of lizards of western Mexico related to Cnemidophorus sackiRichard George Zweifel · First published 1959Open the Tome
Ecology, distribution, and systematics of frogs of the Rana boylei groupRichard George Zweifel · First published 1955Open the Tome
