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  1. Bird migration in the Mississippi Valley /
    By: Cooke, Wells Woodbridge, - Widmann, Otto.
    Publication info: [Chicago?] :The American Field,1883.
    Holding Institution: Multiple institutions
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  2. A preliminary catalog of the birds of Missouri /
    By: Widmann, Otto.
    Publication info: St. Louis :Academy of Science of St. Louis,1907.
    Holding Institution: Cornell University Library
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  3. A preliminary catalog of the birds of Missouri /
    By: Widmann, Otto.
    Publication info: St. Louis :Academy of Science of St. Louis,1907.
    Holding Institution: University of California Libraries (archive.org)
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  4. A preliminary catalog of the birds of Missouri /
    By: Widmann, Otto.
    Publication info: St. Louis? :Academy of Sciences of St. Louis?1907?
    Holding Institution: Smithsonian Libraries
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