TY  - BOOK
AU  - Gustafson, A. F. 
TI  - Conservation in the United States
U1  - 333.72 
PY  - 1949///
CY  - Ithaca, N. Y.
PB  - Comstock Pub. Co.
KW  - Natural resources
KW  - United States
KW  - Conservation of natural resources
KW  - Soil conservation
KW  - Economic conditions
N1  - Includes index
ER  -