TY  - BOOK
AU  - Sellars,Richard West
TI  - Preserving nature in the national parks : a history 
SN  - 0300075782
AV  - SB482.A4 S44 1997
U1  - 333.70973 22
PY  - 1997///
CY  - New Haven 
PB  - Yale University Press
KW  - United States
KW  - National Park Service
KW  - History
KW  - National parks and reserves
KW  - Management
KW  - Nature conservation
KW  - Natural resources
N1  - Includes bibliographical references (p. 293-360) and index
ER  -