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You searched for: All Creators Reger, David B. (David Bright), 1882-1958. Remove constraint All Creators: Reger, David B. (David Bright), 1882-1958. All Subjects Geology, Stratigraphic--Pennsylvania. Remove constraint All Subjects: Geology, Stratigraphic--Pennsylvania. Subject Topical Geology, Stratigraphic--Pennsylvania. Remove constraint Subject Topical: Geology, Stratigraphic--Pennsylvania.

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