Distribution of western spruce budworm egg masses on white fir and Douglas-firFormat: [microform] /
Author: Schmid, J. M.
Publisher: Fort Collins, Colo. : Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture,
Date: [1982] This title can be found in 1 Iowa libraries.
Western spruce budworm egg mass dimensions : an influence on population estimates /Author: Washburn, Richard Irvin,
Publisher: Ogden, Utah : Intermountain Forest & Range Experiment Station, Forest Service, U.S. Dept. of Agriculture,
Date: 1973. This title can be found in 1 Iowa libraries.
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