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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Phatak, S. C. (Sharad C.)
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1985
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Biological control  Nutgrass  Patents, Government-owned  Puccinia  Rust fungi  United States  Weeds