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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Association of Applied Biologists. - Association of Economic Biologists.
    Publication info: [Wellesbourne, Warwick, etc.], Association of Applied Biologists [etc.],
    Holding Institution: MBLWHOI Library
    Subjects: Biochemistry  Biology, Economic  Periodicals
  2. By: United States. Soil Conservation Service.
    Publication info: Portland, Or, 1954
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Biology, Economic  Northwest, Pacific  Soil conservation  Wildlife management