A test planting of 2-0 and 3-0 Douglas-fir trees on a steep south slope

Berntsen, Carl M. 1958. A test planting of 2-0 and 3-0 Douglas-fir trees on a steep south slope. Res. Note 165. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 4 p.