Search for: Title Author Subject Series that begins with: 10 20 30 50 100 per page < Previous 10 Headings Next 10 Headings > Browse Headings # Western spruce budworm 4 Western spruce budworm -- Computer simulation. 2 Western spruce budworm -- Control -- Arizona -- Grand Canyon National Park. 2 Western spruce budworm -- Control -- Arizona -- Kaibab National Forest. 2 Western spruce budworm -- Control -- New Mexico -- Carson National Forest. 2 Western spruce budworm -- Control -- United States. 1 Western spruce budworm -- Front Range (Colo. and Wyo.) 1 Western spruce budworm -- Great Lakes Region (North America) 1 Western spruce budworm -- Mortality -- Colorado. 1 Western spruce budworm -- United States. 1 10 20 30 50 100 per page < Previous 10 Headings Next 10 Headings >