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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Alderson, James S. - Sharp, W.C. - United States. Department of Agriculture.
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1994
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Adaptation  Grasses  Plant breeding  release  seed certification  Seeds  United States  uses  Varieties