Author: Sickenberg, O.
Title: Beiträge zur Kenntnis Tertiärer Sirenen. I. Die eozänen Sirenen des Mittelmeergebietes. II. Die Sirenen des belgischen Tertiärs.
Description: Bruxelles, Musée royal d'Histoire Naturelle, 1934. Very large 8vo (33.0 x 25.2 cm). 352 pp., 50 [34, 16], 11 plates (several larger, folded). Original printed wrappers. = Two studies, with a supplement, combined into one massive paper. Contains the description of new taxa. Uncut. Unopened. Some call this a work in folio, because of the size, but actually it is a giant 8vo publication. Wrappers toned and with minimal chipping at edges (as usual with uncut copies), otherwise very good, clean.

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