Gustafson, Axel Ferdinand, 1880-
Conservation in the United States.-
by A.F. Gustafson [and others]
- 3d ed.-
- Ithaca, N.Y. : Comstock Pub. Co., 1961.1949.
- ix, 534p. illus., maps.
"Suggestions for supplementary reading" : p. [513] - 520.
1. Natural resources - U.S.
2. U. S. Econ. condit.
HC 106.3 G885 1949.