Randall, Carol; United States. Forest Health Protection; United States. Forest Service. Northern Region(Missoula, MT : U.S. Dept. of Agriculture, Forest Service, Northern Region, 2000-05)
Hagle, Susan K.; United States. Forest Service. Northern Region; United States. Forest Health Protection(Missoula, MT : U.S. Dept. of Agriculture, Forest Service, Northern Region, 2002-04)
James, Robert L.; Gilligan, Carma J.; United States. Forest Pest Management; United States. Forest Service. Northern Region(Missoula, Mont. : U.S. Dept. of Agriculture, Forest Service, Northern Region, 1988)
Gibson, K. E. (Kenneth E.); Oakes, Robert D.; United States. Forest Service. Northern Region([Missoula, Mont.?] : USDA Forest Service, Northern Region, 1988)
Gibson, K. E. (Kenneth E.); Oakes, Robert D.; United States. Forest Service. Northern Region([Missoula, Mont.? : USDA Forest Service, Northern Region, 1988)
Gibson, K. E. (Kenneth E.); Oakes, Robert D.; United States. Forest Service. Northern Region(Missoula, Mont.? : USDA Forest Service, Northern Region, 1993-03)
Gibson, K. E. (Kenneth E.); Oakes, Robert D.; United States. Forest Service. Northern Region(Missoula, Mont.? : USDA Forest Service, Northern Region, 1994, 1994-03)
Hagle, Susan K.; Grasham, John L.; United States. Forest Service. Northern Region([Missoula, Mont.] : USDA Forest Service, Northern Region, Pest Management, 1988)
Kegley, Sandy; United States. Forest Health Protection; United States. Forest Service. Northern Region(Missoula, MT : U.S. Dept. of Agriculture, Forest Service, Northern Region, 2001)
Gibson, K. E. (Kenneth E.); McGregor, Mark D.; Amman, Gene D.; United States. Forest Service. Northern Region(Missoula, Mont. : USDA Forest Service, Northern Region, 1985)
James, Robert L.; Burr, K. E.; United States. Forest Health Protection; United States. Forest Service. Northern Region(Missoula, MT : U.S. Dept. of Agriculture, Forest Service, Northern Region, 2000-05)