A guide to Grand Canyon geology along Bright Angel Trail
By: by Dave Thayer.
Publisher: Grand Canyon Natural History Association
Published: 1986
Place of publication: [Arizona?
Language: eng
Number of pages: 66
Subjects: Geology -- Arizona -- Grand Canyon National Park -- Guidebooks.; Grand Canyon National Park (Ariz.) -- Guidebooks.
Other titles: Grand Canyon geology.
Notes: Cover title.
Includes index.