Author: GRABAU, A.W.
Title: Ordovician fossils from North China.
Description: 1922. Paleontologia Sinica Ser. B Vol. 1, fasc. 1; 126 pp. 19 fig. 9 plts. h.t with mainly molluscs esp. cephalopods (6 plts.). Orig. wrps. with small libr. stamp, ends of spine and backcover a bit worn, otherwise and contents very good, 4to.

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