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  1. Bird notes afield; essays on the birds of the Pacific coast with a field check list,
    By: Keeler, Charles Augustus,
    Edition: [2d ed., rev. and enl.]
    Publication info: San Franciso and New York,P. Elder and company[1907, c1906]
    Holding Institution: Smithsonian Libraries
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  2. Bird notes afield; a series of essays on the birds of California,
    By: Keeler, Charles Augustus,
    Publication info: San Francisco,D.P. Elder & M. Shepard,1899.
    Holding Institution: Smithsonian Libraries
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  3. Evolution of the colors of North American land birds /
    By: Keeler, Charles Augustus,
    Publication info: San Francisco :California Academy of Sciences,1893.
    Holding Institution: Smithsonian Libraries
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  4. Evolution of the colors of North American land birds,
    By: Keeler, Charles Augustus, - Scheerman, J. G. - California Academy of Sciences.
    Publication info: San Francisco, California,Academy of Sciences,1893.
    Holding Institution: Cornell University Library
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  5. Evolution of the colors of North American Land Birds,
    By: Keeler, Charles Augustus,
    Publication info: San Francisco,California academy of sciences,1893.
    Holding Institution: University of California Libraries (archive.org)
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