TY  - BOOK
ED  - National Geographic Society (U.S.).
TI  - Window on America: discovering her natural beauty 
SN  - 087044588X :
AV  - E169.Z82 W56 1987
U1  - 917.3 WIN 19
PY  - 1987///
CY  - Washington, D.C.
PB  - The Society
KW  - Natural history
KW  - United States
KW  - Pictorial works
N1  - Includes index; Bibliography: p. 196
ER  -