Author: Downs, Th., 1956.:
Title: The Mascall fauna from the Miocene of Oregon. [Univ. California Publ. Geol. Sci., 31(5).]
Description: Berkeley, Cal. Large 8vo. Pp. iv,199-343, 8 plates, 50 figs., bibl. Orig. wrappers. Covers a little thumbed, contents very good.

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