Soil conservation districts in action on the land /
by Glenn K. Rule.
- Washington, D.C. : U.S. Dept. of Agriculture, 1941.
- 25 p. : ill., maps ; 27 cm.
- Miscellaneous publication / United States Department of Agriculture ; no. 448 .
- Miscellaneous publication (United States. Department of Agriculture) ; no. 448. .