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Man's Impact on the Colorado River in the Grand Canyon: The Grand Canyon is Being Affected Both by the Vastly Changed Colorado River and by the Increased Presence of Man

ContributorsDolan, Robert (Author) / Howard, Alan (Author) / Gallenson, Arthur (Author)

Created1974

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Man's Impact on the Colorado River in the Grand Canyon: The Grand Canyon is Being Affected Both by the Vastly Changed Colorado River and by the Increased Presence of Man

ContributorsDolan, Robert (Author) / Howard, Alan (Author) / Gallenson, Arthur (Author)

Created1974-07