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  1. Fourth annual report of the State entomologist of Indiana / Benjamin W. Douglass.
    By: Douglass, Benjamin W. - Metcalf Collection (North Carolina State University).
    Publication info: Indianapolis :W.B. Burford,1912.
    Contributed by: NCSU Libraries (
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  2. A preliminary bulletin concerning some bee diseases in Indiana.
    By: Indiana. - Demuth, George S. - Douglass, Benjamin W.
    Publication info: Indianapolis, Ind.[1909]
    Contributed by: Library of Congress
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