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  1. Taxonomic notes on South American Colostethus with descriptions of two new species (Amphibia, Dendrobatidae)
    By: Edwards, S R
    Type: Article
    In: Proceedings of The Biological Society of Washington
    Volume: 84
    Date: 1971
    Page Range: 147--162
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  2. Taxonomic notes on South American dendrobatid frogs of the genus Colostethus
    By: Edwards, S R
    Type: Article
    In: Occasional Papers of the Museum of Natural History, University of Kansas
    Volume: 30
    Date: 1974
    Page Range: 1--14
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  3. THOMAS DRAPER CAMPBELL 1894-1967
    By: Edwards, S R
    Type: Article
    In: Transactions of The Royal Society of South Australia
    Volume: 92
    Date: 1968
    Page Range: 125--125
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