Geology and natural history of the fifth field conference, Powell centennial river expedition
Subtitle: 1969.
Series: Its Guidebook; Four Corners Geological Society guidebook.
Published: 1969
Place of publication: [Durango, Colo
Language: eng
Number of pages: 212
Subjects: Powell, John Wesley, 1834-1902.; Geology -- Arizona -- Grand Canyon Region -- Guidebooks.; Grand Canyon Region (Ariz.) -- Description and travel.
Notes: Includes bibliographies.
Cover title: Geology and natural history of the Grand Canyon region.
Title on spine: Grand Canyon.
Papers included to be used as background material by the conference organized and spondored by the Four Corners Geological Society.