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  1. Control of horse flies on cattle
    By: Bruce, Willis Nels. - Decker, G. C. (George Clemens),
    Publication info: Urbana,1951.
    Holding Institution: University Library, University of Illinois Urbana Champaign
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  2. Significance of pesticide residues : practical factors in persistence.
    By: Decker, G. C. (George Clemens), - Illinois. Natural History Survey Division.
    Publication info: Urbana,1966.
    Holding Institution: University Library, University of Illinois Urbana Champaign
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