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Silvicultural guide for paper birch in the Northeast
Lawrence O. Safford · U.S. Dept. of Agriculture, Forest Service, Northeastern Forest Experiment Station
29 sayfa · 1983
Paper birch / Forests and forestry
Ten-year average growth rates in the spruce-fir region of northern New England
Lawrence O. Safford · Northeastern Forest Experiment Station, Forest Service, U.S. Dept. of Agriculture
20 sayfa · 1968
Fir / Forests and forestry / Mensuration / Spruce