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Cataclysms on the Columbia - Allen, John, and Burns, Marjorie, and Sargent, Sam
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The formation of the Grand Coulee remained a mystery for many years, until J Harlen Bretz proved that the Columbia River basin was the site of huge floods 15,000 years ago that created the landscape we see today.

Cataclysms on the Columbia 2005, Timber Press (OR), Portland, OR

ISBN-13: 9780881922158

Trade paperback

Cataclysms on the Columbia 1987, Timber Press (OR)

ISBN-13: 9780881920673