Author: Groot, G.E. de, 1963.:
Title: Rugose corals from the Carboniferous of Northern Palencia (Spain).
Description: Leiden: E.J. Groen. 4to. Pp. viii,123, 26 pld. of photos of thin sections, 37 figs., 1 map, bibl. Orig. wrs. - Thesis, University of Leiden. Also published as Leid. Geol. Meded., vol. 29(1).

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