Author: Chalard, J., 1960.:
Title: Contribution à l'étude du Namurien du bassin houiller du Nord de la France. [Etudes géologiques pour l'Atlas de Topographie souterraine [...] III. Stratigraphie, 1er fascicule.]
Description: Valenciennes 1960. 2 volumes, large 4to. Vol. 1: pp. 299,[27], several photos of cephalopod fossils on 12 plates, ,30 figs., bibliogr; vol. 2: pp. 13, 66 fold. plates of sections, plans and diagrs. Paperbound, orig. printed wrappers. Very good.

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