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Ptychohyla

  1. Descriptions of Two Species of Frogs, Genus Ptychohyla
Studies of American Hylid Frogs, V

    William Edward Duellman

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    William Edward Duellman
    Descriptions of Two Species of Frogs, Genus Ptychohyla
Studies of American Hylid Frogs, V

  2. A Review of the Middle American Tree Frogs of the Genus Ptychohyla

    William Edward Duellman

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    William Edward Duellman
    A Review of the Middle American Tree Frogs of the Genus Ptychohyla
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