The internet's only search engine for amphibian conservation, biology, management, education, policy, breeding, and care information, with links to more than 1000 web sites, news articles, background papers, and books. www.frogs.org/froghoo/index.asp
Taxonomic checklist for North America north of Mexico and detailed accounts, including photos and range maps, for dozens of species. www.npwrc.usgs.gov/narcam/idguide
Introduction to the taxonomy of Amphibia, including Salientia (frogs and toads), Caudata (salamanders and newts), and gymnophiona (caecilians). tolweb.org/..
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