TY - BOOK ID - 145604194 TI - Guidelines for precommercial thinning of Douglas-fir AU - Reukema, Donald L. AU - Pacific Northwest Forest and Range Experiment Station (Portland, Or.) AU - Pacific Northwest Research Station (Portland, Or.) PY - 1975 PB - Portland, Or. (333 S.W. First Ave., Portland 97208) : USDA Forest Service, Pacific Northwest Research Station, DB - UniCat KW - Douglas fir. KW - Forest thinning. KW - Forest management. UR - https://www.unicat.be/uniCat?func=search&query=sysid:145604194 AB - ER -