Detecting suboutbreak populations of the Douglas-fir tussock moth by sequential sampling of early larvae in the lower tree crown

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by
Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station , Portland, Or
Douglas-fir tussock
StatementRichard R. Mason
SeriesUSDA Forest Service research paper PNW -- 238
ContributionsPacific Northwest Forest and Range Experiment Station (Portland, Or.), United States. Forest Service
The Physical Object
Pagination9 p. :
ID Numbers
Open LibraryOL13601967M

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