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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Osler, G. F. - Stage, Harry H. (Harry Hutchinson), - United States. Bureau of Entomology and Plant Quarantine. Division of Insects Affecting Man and Animals.
    Publication info: Portland, Oregon, U.S. Department of Agriculture, Bureau of Entomology, Division of Insects Affecting Man and Animals, [1934]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: United States. Bureau of Entomology and Plant Quarantine. Division of Insects Affecting Man and Animals.
    Publication info: [Washington, D.C.], Bureau of Entomology and Plant Quarantine, Agricultural Research Administration, U.S. Dept. of Agriculture, 1952
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library