01548oam 2200433 a 450 991069913250332120230902162246.0(CKB)5470000002400573(OCoLC)464210596(EXLCZ)99547000000240057320091109d1975 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierGuidelines for precommercial thinning of Douglas-fir[electronic resource] /Donald L. ReukemaPortland, Or. (333 S.W. First Ave., Portland 97208) :USDA Forest Service, Pacific Northwest Research Station,[1975]1 online resource (10 pages) illustrationsGeneral technical report PNW ;GTR-30Title from PDF title screen (PNRS, viewed Aug. 25, 2009).Includes bibliographical references (pages 7-9).General technical report PNW ;30.Douglas firForest thinningForest managementDouglas fir.Forest thinning.Forest management.Reukema Donald L1404437Pacific Northwest Forest and Range Experiment Station (Portland, Or.)Pacific Northwest Research Station (Portland, Or.)GPOGPOGPOBOOK9910699132503321Guidelines for precommercial thinning of Douglas-fir3478987UNINA