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worldcat.org
Frost, Darrel R.; Grant, Taran; Faivovich, Julián; Bain, Raoul H.; Haas, Alexander; Haddad, Célio F.B.; De Sá, Rafael O.; Channing, Alan et al.. (2006). The Amphibian Tree of Life. 297, 1–370 or. doi:10.1206/0003-0090(2006)297[0001:TATOL]2.0.CO;2. ISSN0003-0090..