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Please read BHL's Acknowledgment of Harmful Content
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  1. By: United States. Entomology Research Branch. - Anderson, William Henry, - United States. Entomology Research Branch.
    Publication info: Beltsville, Md, 1956?
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: United States. Entomology Research Branch.
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, [1955]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library