Author: Vogel, F., 1892.:
Title: Das Ober-Senon von Irnich am Nordrand der Eifel.
Description: Bonn: C. Georgi. pp. [ii],106,[2], 1 pl. of fossils, index. Orig. wrs. Paper browned due to quality. - Thesis. Almost exclusively on the mollusc fauna.

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