Author: Woodring, W.P., 1938.:
Title: Lower Pliocene mollusks and echinoids from the Los Angeles Basin, California.
Description: [U.S. Geol. Surv. Prof. Pap., 190.] Washington. 4to. Pp. [ii],67, 6 pls., 2 fold. maps, 1 fold. diagr., refs., index. Orig. wrs. - Almost exclusively on molluscs.

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