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1875 Rain sculpture, Salt Creek C … Exploration Book Rain sculpture, Salt Creek C … |
1966 Domes & Basin. Centripetal D … Physical Atlas Domes & Basin. Centripetal D … |
1966 Folds. Hollidysburg, PA. Bel … Physical Atlas Folds. Plunging Anticlines a … |
1966 Folds. Plunging Anticlinal a … Physical Atlas Folds. Plunging Anticlinal a … |