Author
Kucera, Daniel R.
2
Taylor, Robert Gay, 1940-
2
United States Department of Agriculture. Forest Service
2
Canada. Canadian Forestry Service
1
Canada/United States Spruce Budworms Program
1
Critchfield, William Burke
1
Hardy, Yvan
1
Little, Elbert L. 1907-2004
1
Maniville, Michel
1
Schmitt, Daniel M.
1
United States. Forest Service
1