Author: Witt Puyt, J.F.C. de, 1941.:
Title: Geologische und paläontologische Beschreibung der Umgebung von Ljubuski, Hergecovina.
Description: Utrecht. 4to. Pp. 99, many photos of foraminifera on 5 pls., 1 fold. col. geol. map and 1 fold. sheet of sections in pocket, bibl. Orig. cloth. - Thesis. The paleontological section deals exclusively with Eocene foraminifera and occupies pages 41 through 92.

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