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DNR Office
Author
7
Canada/United States Spruce Budworms Program
6
United States. Cooperative State Research Service
4
United States. Forest Service
1
Adamus, Paul R.
1
Bramlett, D. L
1
CANUSA
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1
Cooperative State Research Service
1
Dimond, John B.
1
Garton, Edward O.
1
Grimble, D. G.
1
Langelier, Lisa A.
1
Lewis, Franklin B.
1
Marty, Robert Jay, 1931-
1
Morris, Oswald N.
1
Schmitt, D. M.
1
Searcy, J. L.
1
Tilles, David A
1
United States. Dept. of Agriculture
1
United States. Soil Conservation Service
1
Woodley, Norman E
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Subject
6
Spruce budworm
3
Control
3
Pest management
2
Aerial spraying and dusting in forestry
2
Bacillus thuringiensis
2
Biological control
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2
Forest management
1
Aerial photography in soil surveys
1
Aquatic ecology
1
Classification
1
Effect of insecticides on
1
Environmental aspects
1
Environmental monitoring
1
Forest landscape management
1
Forest reserves
1
Identification
1
Insecticides
1
Landscape architecture
1
Landscape protection
1
Management
1
Parasites
1
Photographic interpretation
1
Pollen
1
Pollination
1
Predation (Biology)
1
Research
1
Silviculture
1
Soil mapping
1
Soils
1
Trees
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Collection
Year of Publication