Corridors of time
Subtitle: 1,700,000,000 years of earth at Grand Canyon
By: panoramic photography and text by Ron Redfern ; illustrations by Gary Hincks ; introduction by Carl Sagan.
Edition: Reader's digest ed.
Publisher: Times Books
Published: 1983
Place of publication: [New York]
Language: eng
Number of pages: 195
Subjects: Geology -- Arizona -- Grand Canyon Region; Grand Canyon (Ariz.) -- Description and travel
Notes: 114,711

Bibliography: p. 194-195.