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Title: Congrès International de Stratigraphie et de Géologie du Carbonifère, Krefeld, 23.-28. August 1971. Compte rendu.
Description: Krefeld 1972. 4to. Total of 1750 pp., numerous illus. on 104 pls., 139 tabs., 575 figs., maps and diagrs. in text, refs. Orig. half cloth. - Papers in French, English or German.

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