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Please read BHL's Acknowledgment of Harmful Content
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  1. By: United States. Department of Agriculture.
    Publication info: [Washington, D.C.], U.S. Dept. of Agriculture, 1997
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Animal and Plant Health Inspection Service  Aphis (Aphididae)  governmental programs and projects  pest management  Wildlife management