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  1. A new toad from western China, by Karl P. Schmidt and Ch'eng-chao Liu.
    By: Schmidt, Karl Patterson, - Liu, Ch'eng-chao,
    Publication info: Chicago,1940.
    Contributed by: University of Illinois Urbana Champaign
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  2. Secondary sex characters of Chinese frogs and toads.
    By: Liu, Ch'eng-chao,
    Publication info: Chicago,1936.
    Contributed by: University of Illinois Urbana Champaign
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