Costs of tractor logging in southern pine
By: by Robert E. Worthington.
Contributors: United States. Dept. of Agriculture.
Series: Technical bulletin / United States Department of Agriculture -- no. 700; Technical bulletin (United States. Dept. of Agriculture) -- no. 700.
Publisher: U.S. Dept. of Agriculture
Published: 1939
Place of publication: Washington, D.C
Language: eng
Number of pages: 64
Subjects: Logging -- Machinery -- Cost of operation
Notes: Cover title.

"November 1939."