TY  - BOOK
AU  - Gustafson,Axel Ferdinand
TI  - Conservation in the United States
PY  - 1949///
CY  - Ithaca
PB  - Comstock Publishing Associates
KW  - Natural resources
KW  - United States
KW  - Economic conditions
N1  - 'Selections for supplementary reading': p. 513-520
ER  -