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The future of BHL is uncertain, but hopeful. Learn more.
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  1. By: Fisher, H. H. - Soderholm, P. K., - Kahn, R. P., - United States. Agricultural Research Service.
    Publication info: [Beltsville, Md.], U.S. Dept. of Agriculture, Agricultural Research Service, 1967
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library