The wilderness world of the Grand Canyon: "leave it as it is"
By: [by] Ann and Myron Sutton. Photos. by Philip Hyde.
Edition: [1st ed.]
Publisher: Lippincott
Published: 1971
Place of publication: Philadelphia
Language: eng
Number of pages: 241
Subjects: Natural history -- Arizona -- Grand Canyon Region; Grand Canyon National Park (Ariz.)
Notes: 94384

Bibliography: p. [225]-229.