selection system of silviculture in spruce-fir stands
Subtitle: procedures, early results, and comparisons with unmanaged stands
By: by Robert M. Frank and Barton M. Blum
Contributors: Blum, Barton M., joint author; United States. Forest Service; Northeastern Forest Experiment Station (Radnor, Pa.)
Series: USDA Forest Service research paper NE -- 425
Publisher: Dept. of Agriculture, Forest Service, Northeastern Forest Experiment Station
Published: 1978
Place of publication: Broomall, Pa
Language: eng
Number of pages: 15
Subjects: Fir; Forests and forestry -- United States; Spruce -- United States
Notes: Bibliography: p. 15