Author: NELSON, R.M.
Title: A contribution to the paleontology of the Martinez Eocene of California.
Description: 1925. Univ. California Publ. Bull. Dept. Geol. Sci. 15-11; pp. 397-466, 1 figs, 13 plts. h.t. with molluscs, 1 fold-out pl. with map. Orig. wrps. with libr. stamp.

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