Author: SEILACHER, ADOLF
Title: Die Sphinctozoa, eine Gruppe fossiler Kalkschwämme.
Description: 1961. Akad. Wiss. Mainz, Abh. Math-Naturw. Kl. 1961-10; 70 pp. 8 fig. (incl. plt. h.t. folding-out), 9 plts. h.t. Orig. wrps. 2 small ticket taped to spine, ex-libris opposite title page, contents very good, uncut.

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