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  1. By: Sievers, A. F. (Arthur Frederick),
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture,1930.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: AgSpace  Botany, Medical  Classification  Ethnobotany  Internet resource  Medicinal plants  Traditional medicine  United States  Weeds  Wild flowers  wild plants