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