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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Gilstrap, F. E. (Frank Ephriam), - Hart, W.G.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Biological control  biological control agents  Costa Rica  Fruit Crops  Geographical distribution  Hawaii  History  introduced species  Parasites  parasites of insect pests  projects  Tephritidae  Vegetables