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  1. By: United States. Forest Service. Northern Region. State & Private Forestry. - Barry, John Willard, - Ekblad, Robert B. - Ciesla, William M. - Dewey, Jerald E. - Equipment Development Center (Missoula, Mont.) - United States. Army Dugway Proving Ground.
    Publication info: Dugway, Utah :U.S. Army Dugway Proving Ground,1975.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Barry, John Willard, - United States. Forest Insect and Disease Management. Methods Application Group.
    Publication info: Davis, Calif. :Methods Application Group, Forest Insect and Disease Management, Forest Service, USDA,[1981]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  3. By: United States. National Steering Committee for Management of Gypsy Moth and Eastern Defoliators. Meeting Albuquerque, N.M.) - Barry, John Willard, - United States. Forest Pest Management.
    Publication info: Davis, Calif. :USDA Forest Service, Forest Pest Management,October 15, 1992
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  4. By: United States. National Steering Committee for Management of Western Defoliators. Meeting Albuquerque, N.M.) - Barry, John Willard, - United States. Forest Pest Management. - National Steering Committee for Management of Western Defoliators.
    Publication info: Davis, CA :USDA Forest Service, Forest Pest Management,1992.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  5. By: National Steering Committee for Management of Seed, Cone, and Regeneration Insects (U.S.). Meeting Placerville, Calif.) - Barry, John Willard, - United States. Forest Pest Management.
    Publication info: Davis, CA :USDA Forest Service, Washington Office/Forest Pest Management,1993.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  6. By: National Steering Committee for Management of Seed, Cone, and Regeneration Insects (U.S.). Meeting Boone, N.C.) - Barry, John Willard, - United States. Forest Pest Management. - National Steering Committee for Management of Seed, Cone, and Regeneration Insects (U.S.)
    Publication info: Davis, CA :USDA Forest Service, Forest Pest Management,[1991]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  7. By: United States. National Steering Committee for Management of Gypsy Moth and Eastern Defoliators. Meeting Blacksburg, Va.) - Barry, John Willard, - United States. Forest Pest Management.
    Publication info: Davis, Calif. :USDA Forest Service, Forest Pest Management,[1992?]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  8. By: United States. National Steering Committee for Management of Western Defoliators. Meeting Spokane, Wash.) - Barry, John Willard, - United States. Forest Pest Management.
    Publication info: Davis, CA :USDA Forest Service, Forest Pest Management,1994.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  9. By: Barry, John Willard, - National Steering Committee for Management of Seed, Cone, and Regeneration Insects (U.S.). Meeting Coeur d'Alene, Ida.)
    Publication info: Davis, CA :USDA Forest Service, Forest Health Protection,[1996]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  10. By: United States. National Steering Committee for Management of Western Defoliators. Meeting West Sacramento, Calif.) - Barry, John Willard, - United States. Forest Pest Management.
    Publication info: Davis, Calif. :USDA Forest Service, Forest Pest Management,1993.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  11. By: National Steering Committee for Management of Seed, Cone, and Regeneration Insects (U.S.). Meeting Rhinelander, Wis.) - Barry, John Willard, - United States. Forest Health Protection.
    Publication info: Davis, CA :USDA Forest Service, Forest Health Protection,1995.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  12. By: United States. National Steering Committee for Management of Gypsy Moth and Eastern Defoliators. Meeting Salt Lake City, Utah) - Barry, John Willard, - United States. Forest Pest Management.
    Publication info: Davis, CA :USDA Forest Service, Forest Pest Management,1993.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  13. By: Barry, John Willard, - United States. Forest Pest Management.
    Publication info: Davis, Calif. :USDA Forest Service, Forest Pest Management,[1993]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library