Author: Imlay, R.W., 1955.:
Title: Characteristic Jurassic molluscs from Northern Alaska.
Description: [U.S. Geol. Surv. Prpf. Pap., 274-D.] Washington. 4to. Pp. iv,69-96,[8], 91 photos on 6 pls., 1 tab., 1 map, 1 fold. diagr. in pocket, refs., index. Orig. wrs.

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