wilderness world of the Grand Canyon
Subtitle: "leave it as it is"
By: Ann and Myron Sutton.  Photos. by Philip Hyde.
Contributors: Sutton, Myron.
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.)