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  1. Frogs of the Hyla armata and the Hyla pulchella groups in the Andes of South America, with definitions and analyses of phylogenetic relationships of Andean groups of Hyla / by William E. Duellman, Ignacio de la Riva, and Erik R. Wild.
    By: Duellman, William Edward, - Riva, Ignacio de la. - Wild, Erik Russell. - University of Kansas.
    Publication info: Lawrence, Kan. :Natural History Museum, The University of Kansas,c1997.
    Contributed by: Harvard University, MCZ, Ernst Mayr Library
    BHL Collections: Ernst Mayr Library of the MCZ, Harvard University
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