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1966

Folds. Plunging Anticlinal a …

Physical Atlas

Scovel, James L. ; O'Brien, …

1966

Folds. Hollidysburg, PA. Bel …

Physical Atlas

Scovel, James L. ; O'Brien, …

1966

Domes & Basin. Centripetal D …

Physical Atlas

Scovel, James L. ; O'Brien, …