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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Winston, Rachel - United States. Forest Health Technology Enterprise Team.
    Publication info: Morgantown, WV, U.S. Dept. of Agriculture, Forest Service, FHTET, [2010]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Biological control  Hypericum perforatum  Weeds  
  2. By: Murphy, Alfred Henry, - Love, R. Merton (Robert Merton), - Berry, Lester J.,
    Publication info: [Berkeley, Calif.], Division of Agricultural Sciences, University of California, 1954
    Holding Institution: University of California, Davis Libraries
    Subjects: California  Control  Hypericum perforatum  Range management  Weeds