America's majestic canyons
By: prepared by the Special Publications Division, National Geographic Society.
Contributors: National Geographic Society (U.S.). Special Publications Division.
Publisher: The Society
Published: 1979
Place of publication: Washington
Language: eng
Number of pages: 207
Subjects: Canyons -- United States.; United States -- Description and travel.
Notes: Bibliography: p. 204.
Includes index.