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You searched for: Creator Personal Names Clendening, John A. (John Albert), 1932- Remove constraint Creator Personal Names: Clendening, John A. (John Albert), 1932- All Subjects Plant spores, Fossil. Remove constraint All Subjects: Plant spores, Fossil. Subject Topical Geology--Appalachian Region. Remove constraint Subject Topical: Geology--Appalachian Region.

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