Author: Kirk, E., & Amsden, T.W., 1952.:
Title: Upper Silurian brachiopods from Southeastern Alaska.
Description: [U.S. Geol. Surv. Prof. Pap., 233-C.] Washington. 4to. Pp. iv,53-66[3] 95 photos on 4 pls., 7 figs., refs., index. Orig. wrs.

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