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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Zweifel, Richard George,
    Publication info: New York, N.Y, American Museum of Natural History, [1961]
    Holding Institution: American Museum of Natural History Library
    Subjects: 59.78H:13(79.1)  Amphibians  Arizona  Development  Frogs  Hyla arenicolor  Hyla wrightorum  Larvae  Mexico  New Mexico  Tadpoles