Leiden 1968, Broschur, Heft.

292 S, Abb., Taf., Beilagen, 28 cm, Einband fleckig, Ecke geknickt, Inhalt: Westbroek, Morphological observations with systematic implications on some Palaeozoic Rhynchonellida from Europe, with special emphasis on the Uncinulidae; Evers, Geology of the Leonides between the Bernesga and Porma rivers, Cantabrian Mountains, NW Spain; Mey, The geology of the upper Ribagorzana and Baliera Valleys, central Pyrenees, Spain; Mey et al., Lithostratigraphic subdivision of post-hercynian deposits in the South-Sentral Pyrenees, Spain; Mey, The geology of the upper Ribagorzana and Tor Valleys, Central Pyrenees, Spain.