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  1. Mechanical devices to expedite boll weevil rearing in the laboratory /
    By: Gast, Robert Theodore, - Vardell, Henry Hardee. - United States. Agricultural Research Service.
    Publication info: [Washington, D.C.?] :U.S. Dept. of Agriculture, Agricultural Research Service,[1963].
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
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