Knots in second-growth pine and the desirability of pruning
By: [by Benson H. Paul].
Series: Miscellaneous publication / United States Department of Agriculture -- no. 307; Miscellaneous publication (United States. Dept. of Agriculture) -- no. 307.
Publisher: Forest Service, U.S. Dept. of Agriculture
Published: 1938
Place of publication: Washington, D.C
Language: eng
Number of pages: 36
Subjects: Pine -- Pruning -- United States.
Other titles: Knots in second growth pine and the desirability of pruning.
Notes: Cover title.

"June 1938."

Bibliography: p. 35.