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HISTORICAL PATTERNS OF WESTERN SPRUCE BUDWORM AND DOUGLAS-FIR TUSSOCK MOTH OUTBREAKS IN THE NORTHERN BLUE MOUNTAINS, OREGON, SINCE A.D. 1700

by Swetnam, T.W.
: UNITED STATES DEPARTMENT OF AGRICULTURE, 1995

Series: United States Forest Service, Research Paper PNW-RP-484.

Other Authors: '; “...Wickman, B. E....”