Soils and security.
Soils and security.
United States Department of agriculture, Soil conservation service.
- [Washington, U.S. Govt. print. off., 1941]
- 1 p. l., 25 p. illus. 23 cm.
"By H. H. Bennett, chief, Soil conservation service."--p. 1.
agr41000127
Soil conservation--United States.
Erosion.
S623 / .U5 1941d
631.450973
"By H. H. Bennett, chief, Soil conservation service."--p. 1.
agr41000127
Soil conservation--United States.
Erosion.
S623 / .U5 1941d
631.450973