Matching Items (2)
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- All Subjects: Grand Canyon National Park (Ariz.)
- Creators: Maxon, John H.
- Creators: U.S. Department of the Interior
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ContributorsMaxon, John H. (Author) / Campbell, Ian (Author) / American Journal of Science (Publisher)
Created1934-10-01
DescriptionExcerpt on the Archean Ripple Mark in the Grand Canyon.
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ContributorsU.S. Department of the Interior (Publisher)
Created1979-12-20
DescriptionColorado River management plan, Grand Canyon National Park, Arizona.