Pilot test results of Sevin, Phosphamidon, and DDT on the western hemlock looper : Lambdina fiscellaria lugubrosa Hulst, in southwest Washington in 1963

Author: Buffam, Paul E. - United States. Forest Service. - United States. Forest Service. Pacific Northwest Region.
Publisher: Portland Or,Insect and Disease Control Branch, Division of Timber Management, Pacific Northwest Region, USDA Forest Service 1964

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