Wickman, B. E., & Scharpf, R. F. (1972). Decay in white fir top-killed by Douglas-fir tussock moth. Pacific Northwest Forest and Range Experiment Station, USDA Forest Service.
Chicago-Zitierstil (17. Ausg.)Wickman, Boyd E., und Robert F. Scharpf. Decay in White Fir Top-killed by Douglas-fir Tussock Moth. Portland, Or: Pacific Northwest Forest and Range Experiment Station, USDA Forest Service, 1972.
MLA-Zitierstil (9. Ausg.)Wickman, Boyd E., und Robert F. Scharpf. Decay in White Fir Top-killed by Douglas-fir Tussock Moth. Pacific Northwest Forest and Range Experiment Station, USDA Forest Service, 1972.
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