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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Newcomer, E. J. (Erval Jackson), - Yothers, M. A.
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1931
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Control  Diseases and pests  Fruit  Oregon  San Jos⥠scale  Washington (State)