- eBookA Taxonomic Revision of the Leptodactylid Frog Genus Syrrhophus CopeJohn D. Lynch
- eBookGenera of Leptodactylid Frogs in MéxicoJohn D. Lynch
- eBookGenera of Leptodactylid Frogs in MéxicoJohn D. Lynch
- eBookSystematic Status of a South American Frog, Allophryne ruthveni GaigeHoward L. Freeman
- eBookA Taxonomic Revision of the Leptodactylid Frog Genus Syrrhophus CopeJohn D. Lynch
- eBookGenera of Leptodactylid Frogs in MéxicoJohn D. Lynch
- eBookSystematic Status of a South American Frog, Allophryne ruthveni GaigeHoward L. Freeman
- eBookSystematic Status of a South American Frog, Allophryne ruthveni GaigeJohn D. Lynch