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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Bongers, Anton J. - Hillebrand, Ben M. - Risse, Lawrence A. - United States. Science and Education Administration.
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, Science and Education Administration, 1981
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library