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  1. The evolution of bird-song, with observations on the influence of heredity and limitation; by Charles A. Witchell.
    By: Witchell, Charles A.,
    Publication info: London,A. and C. Black,1896.
    Contributed by: American Museum of Natural History Library
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  2. Nature's story of the year.
    By: Witchell, Charles A.,
    Publication info: London :Unwin,1904.
    Contributed by: University of California Libraries (archive.org)
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