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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.

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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

Hardcover