Author: Cushman, J.A., 1923.:
Title: The foraminifera of the Vicksburg Group. [With:] The correlation of the Vicksburg Group. By C.W. Cooke.
Description: [U.S. Geol. Surv. Prof. Pap., 133.] Washington. 4to. Pp. [ii],71, many figs. on 8 pls., 1 fold. tab., index. Orig. wrs. - Oligocene, Gulf Coastal Plain.

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