Author: Winkler Prins, C.F., 1968.:
Title: Carboniferous Productidina and Chonetidina [Brachiop.] of the Cantabrian Mountains (NW Spain): systematics, stratigraphy, and palaeoecology.
Description: [Leid. Geol. Meded., 43(2).] Leiden. 4to, 26.5cm. Pp. viii,41-126, 9 pls., 8 tabs., 18 figs., 1 fold. map in pocket, refs. Orig. wrs. Thesis.

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