Author: RAYMOND, P.E.
Title: A contribution to the description of the fauna of the Trenton Group. [Ordovician]
Description: 1921. Canada Geol. Surv. Museum Bull. No. 31; 64 pp. 11 plts. with cystoids, brachiopods, molluscs and trilobites. Orig. wrps. frnt cover with minor traces of use, otherwise and contents very good.

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