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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Pest Control by Chemical, Biological, Genetic, and Physical Means; a Symposium Montreal) - Knipling, E. F.
    Publication info: [Washington], Agricultural Research Service, U.S. Dept. of Agriculture, [1966]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Knipling, E. F. - United States. Agricultural Research Service.
    Publication info: [Washington, D.C.], U.S. Dept. of Agriculture, Agricultural Research Service, [1964]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library