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  1. By: Whittle, K. - Anderson, D. M.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Whittle, K. - Norrbom, Allen
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  3. By: Whittle, K.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  4. By: Whittle, K.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  5. By: Whittle, K. - Ferguson, Douglas C. (Douglas Campbell)
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  6. By: Whittle, K.
    Publication info: [Hyattsville, Md.], Animal and Plant Health Service, U.S. Dept. of Agriculture, [1986]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  7. By: Whittle, K.
    Publication info: [Hyattsville, Md.], Animal and Plant Health Service, U.S. Dept. of Agriculture, [1986]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  8. By: Whittle, K. - Ferguson, Douglas C. (Douglas Campbell)
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  9. By: Whittle, K.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  10. By: Whitehead, Donald R. - Whittle, K. - United States. Animal and Plant Health Inspection Service. Plant Protection and Quarantine Programs.
    Publication info: [Hyattsville, MD], United States Department of Agriculture, Animal and Plant Health Inspection Service, Plant Protection and Quarantine, September 1985
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  11. By: Whittle, K. - United States. Animal and Plant Health Inspection Service. Plant Protection and Quarantine Programs.
    Publication info: [Hyattsville, MD], United States Department of Agriculture, Animal and Plant Health Inspection Service, Plant Protection and Quarantine, September 1984
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  12. By: Whittle, K. - United States. Animal and Plant Health Inspection Service. Plant Protection and Quarantine Programs.
    Publication info: [Hyattsville, MD], United States Department of Agriculture, Animal and Plant Health Inspection Service, Plant Protection and Quarantine, September 1985
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library