TY  - BOOK
AU  - Foss, Phillip O.
TI  - Conservation in the United States: a documentary history
U1  - 333.780973 21st ed.
PY  - 1971///
CY  - New York
PB  - Chelsea House Publishers
KW  - National park
KW  - Natural resources conservation
KW  - Wilderness area
N1  - Index: pp 756-78
ER  -