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  1. Amphisbaena medemi, an interesting new species from Colombia (Amphisbaenia, Reptilia), with a key to the amphisbaenians of the Americas / Carl Gans and Sandra Mathers.
    By: Gans, Carl, - Mathers, Sandra.
    Publication info: [Chicago] :Field Museum of Natural History,1977.
    Contributed by: University of Illinois Urbana Champaign
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