Natural regeneration of Douglas-fir and associated species using modified clear-cutting systems in the Oregon Cascades

Franklin, Jerry F. 1963. Natural regeneration of Douglas-fir and associated species using modified clear-cutting systems in the Oregon Cascades. Res. Pap. PNW-3. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 14 p.