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Subject: Biological control
DNR Office
Author
4
Canada/United States Spruce Budworms Program
2
Canadian Forest Service
2
United States. Cooperative State Research Service
1
ALBERTA AGRICULTURE
1
ALBERTA ENVIRONMENTAL CENTRE
1
American Chemical Society. Division of Pesticide Chemistry
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1
British Columbia. Ministry of Forests
1
CANUSA
1
CORNELL UNIVERSITY
1
Canadian Forest Service. Science Branch
1
Canadian Forestry Service
1
Canadian Forestry Service. Maritimes
1
Commonwealth Institute of Biological Control (England)
1
Cooperative State Research Service
1
Crawford, Hewlette S., 1931-
1
Eidt, D. C.
1
Entomological Society of America
1
Forest Defoliator-Host Interaction Workshop New Haven, Conn.)
1
Forest Pest Management Institute (Canada)
1
Frodsham, A.C.
1
Garner, Willa Y., 1936-
1
Gibson, Phillip
1
Gray, David R.
1
Grimble, D. G.
1
HOFFMAN, M.P.
1
Harper, James D.
1
Harris, Peter
1
Harvey, John, 1925-
1
Hildebrand, M. J
1
Jennings, Daniel T.
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Subject
Biological control
8
Spruce budworm
5
Control
5
Forest insects
5
Insects
5
Pest management
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4
Bacillus thuringiensis
4
Gypsy moth
4
Insect pests
4
Pests
4
Weeds
2
Detection
2
Spraying
1
Aerial spraying and dusting in forestry
1
Aquatic Environment
1
Beneficial insects
1
Blackheaded budworm
1
Breeding
1
Ceranthia samarensis
1
Conidal
1
Crop management
1
Diseases
1
Diseases and pests
1
Entomology
1
Environmental aspects
1
Exotics
1
Forest management
1
Forest pests
1
Forest protection
1
Greenhouses
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Place
Collection
Year of Publication