Author: Berry, E.W., 1916.:
Title: The physical conditions indicated by the flora of the Alum Bluff Formation. // The physical conditions indicated by the flora of the Calvert Formation. [U.S. Geol. Surv. Prof. Pap., 98-E & 98-F.]
Description: Washington. 4to. Pp. [ii],41-59, 2 photos and 21 figs. on 4 plates; pp. ii,61-73, 26 figs. on 2 plates. Two parts, orig. wrappers.- Miocene.

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