Author: YOCHELSON, E.L. & C.R. JONES
Title: Teiichispira, a new Early Ordovician gastropod genus.
Description: 1968. US Geological Survey Professional Paper 613-B; 13 pp. 3 fig. 2 plts. h.t. Orig. wrps. with libr. stamp in corner of front cover, otherwise and contents very good, 4to.

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