Author: Potonié, R., 1958-1970.:
Title: Synopsis der Gattungen der Sporae dispersae. I-VI. [Beih. Geol. Jahrb., 23, 31, 39, 72, 87, 94.]
Description: Hannover. 8vo. Total of 998 pp., 1226 figs. on 87 pls., refs., indexes. Orig. wrappers. - Complete set..

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