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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Heyer, W. Ronald. - Silverstone-Sopkin, Philip Arthur
    Publication info: [Chicago], Field Museum of Natural History, 1969
    Holding Institution: University Library, University of Illinois Urbana Champaign
    Subjects: Amphibians  Larvae  Leptodactylus hylaedactylus  Tadpoles