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  1. Birds of South Dakota.
    By: Over, William H. - Thoms, Craig S.
    Publication info: Vermillion,University of South Dakota,1920 [i.e. 1921]
    Contributed by: Cornell University Library
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  2. Birds of South Dakota. By William H. Over and Craig S. Thoms.
    By: Over, William Henry, - Thoms, Craig S.
    Publication info: Vermillion,University of South Dakota,1920.
    Contributed by: Smithsonian Libraries
    BHL Collections: Smithsonian Libraries
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