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2. Baum, G.R., 1977. Stratigraphic framework of the Middle Eocene to Lower Miocene formations of North Carolina. Ph.D. Thesis, University of North Carolina–Chapel Hill.
3. Sequence stratigraphic concepts as applied to the Eocene carbonates of the Carolinas;Baum,1986
4. Sequence stratigraphic concepts applied to Paleogene outcrops, Gulf and Atlantic basins;Baum,1988
5. Stratigraphic revision of the exposed Middle Eocene to Lower Miocene formations of North Carolina;Baum;Southeast. Geol.,1978