Budworm activity, Oregon and Washington, 1947-1979, by Robert E. Dolph et al.

Title:	Budworm activity, Oregon and Washington, 1947-1979
Alternate title:	Budworm activity in Oregon and Washington, 1947-1979
Author:	Dolph, Robert E.
Author:	United States. Forest Service. Pacific Northwest Region
Author:	United States. Forest Insect and Disease Management
Note:	U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Region, 1980

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Subject:	Bosziekten en -plagen
Subject:	Western spruce budworm
Subject:	Defoliation
Subject:	Forest Pests and Diseases
Subject:	Host plants
Subject:	Insecticides
Subject:	Oregon
Subject:	Pests -- Control
Subject:	Douglas fir
Subject:	Tordeuse occidentale de l'épinette -- Oregon
Subject:	Washington (State)
Subject:	Western spruce budworm -- Oregon
Subject:	Western spruce budworm -- Washington
Subject:	bosbouw
Subject:	bosproducten
Subject:	bosschade
Subject:	bossen
Subject:	forest damage
Subject:	Forest products
Subject:	Forests and forestry
Subject:	forests
Subject:	Insect pests
Subject:	insecten
Subject:	insectenplagen
Subject:	Insects
Subject:	Lepidoptera
Subject:	tortricidae
Subject:	usa
Subject:	vs
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