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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Hart, R. H. (Richard H.) - United States. Agricultural Research Service. Rangeland Resources Research Unit.
    Publication info: [Cheyenne, WY?], U.S. Dept. of Agriculture, Agricultural Research Service, Rangeland Resources Research Unit, [1995?]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library