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Filtering by: Creator United States. Forest Service. Northern Region. State & Private Forestry Remove constraint Creator: United States. Forest Service. Northern Region. State & Private Forestry Decade 1970-1979 Remove constraint Decade: 1970-1979 Rights Statement Copyright Not Evaluated Remove constraint Rights Statement: Copyright Not Evaluated Subject Western spruce budworm -- Montana Remove constraint Subject: Western spruce budworm -- Montana

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