Increasing growth and yield of young spruce pulpwood stands by girdling hardwoods
By: by Marinus Westveld
Series: Circular / United States Department of Agriculture -- no. 431; Circular (United States. Dept. of Agriculture) -- no. 431.
Publisher: U.S. Dept. of Agriculture
Published: 1937
Place of publication: Washington, D.C
Language: eng
Number of pages: 20
Subjects: Spruce; Forest thinning
Notes: Caption title.

"Contribution from Forest Service."

Bibliography: p. 18-19.