A preliminary classification of tree vigor for western larch and Douglas-fir trees in western Montana
By: by Arthur L. Roe
Series: Research note / Northern Rocky Mountain Forest & Range Experiment Station -- no. 66; Research note (Northern Rocky Mountain Forest and Range Experiment Station (Missoula, Mont.)) -- no. 66.
Publisher: Northern Rocky Mountain Forest & Range Experiment Station
Published: 1948
Place of publication: Missoula, Mont
Language: eng
Subjects: Trees; Classification
Notes: Caption title

"November 1948."