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Please read BHL's Acknowledgment of Harmful Content
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  1. By: United States. Animal and Plant Health Inspection Service. Plant Protection and Quarantine Programs. - United States. Animal and Plant Health Service. Plant Protection and Quarantine Programs. - United States. Bureau of Entomology and Plant Quarantine. - United States. Bureau of Entomology and Plant Quarantine. - United States. Plant Pest Control Branch. - United States. Plant Pest Control Division - United States. Plant Pest Control Division.
    Publication info: Hyattsville, MD. [etc.], Plant Protection and Quarantine Programs Animal and Plant Health Service,
    Holding Institution: Multiple institutions
  2. By: United States. Entomology Research Division. - United States. Animal and Plant Health Service. Plant Protection and Quarantine Programs.
    Edition: [Rev. Apr. 1972
    Publication info: Washington, U.S. Govt. Print. Off, 1972]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library