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  1. Report on a game survey of the north central states, made by Aldo Leopold for the Sporting arms and ammunition manufacturers' institute under direction of its Committee on restoration and protection of game ...
    By: Leopold, Aldo, - Sporting Arms and Ammunition Manufacturers' Institute.
    Publication info: Madison, Wis.[Democrat printing company, printers]1931.
    Contributed by: Prelinger Library (archive.org)
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