Author: LEMOS DE SOUSA, J.
Title: Contribution à l'étude du bassin houiller du Douro (NW du Portugal). Atlas de micropetrographie des peranthracites.
Description: 1978. Mem. Serv. Geol. Port. 26 (NS); 92 pp. 7 fig. 36 plts. h.t. Orig. wrps. with traces of use and libr. stamp on front cover, contents very good, lg4to.

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