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