Wickman, B. E., Henshaw, D. L., & Gollob, S. K. (1980). Radial growth in grand fir and Douglas-fir related to defoliation by the Douglas-fir tussock moth in the Blue Mountains outbreak. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station.
Chicago Style (17th ed.) CitationWickman, Boyd E., D. L. Henshaw, and S. K. Gollob. Radial Growth in Grand Fir and Douglas-fir Related to Defoliation by the Douglas-fir Tussock Moth in the Blue Mountains Outbreak. [Portland, Or.]: Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station, 1980.
MLA (9th ed.) CitationWickman, Boyd E., et al. Radial Growth in Grand Fir and Douglas-fir Related to Defoliation by the Douglas-fir Tussock Moth in the Blue Mountains Outbreak. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station, 1980.