TY  - BOOK
AU  - Wallace,Robert
ED  - Time-Life Books.
TI  - The Grand Canyon
AV  - F788 .W215 1973
U1  - 979.1 
PY  - 1973///
CY  - New York
PB  - Time-Life Books
KW  - Grand Canyon (Ariz.)
N1  - Includes bibliographical references (p. 180)
UR  - http://www.archive.org/details/grandcanyon00wall
UR  - http://www.openlibrary.org/books/OL24208575M
ER  -