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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: Duellman, William Edward, - Riva, Ignacio de la. - Wild, Erik Russell. - Missouri. Dept. of Conservation.
    Publication info: Lawrence, Kan. :Natural History Museum, The University of Kansas,c1997.
    Holding Institution: Harvard University, Museum of Comparative Zoology, Ernst Mayr Library
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