CONRAD, Georges.: - L' évolution continentale post-hercynienne du Sahara algérien (Saoura, Erg Chech-Tanezrouft, Ahnet-Mouydir). [Centre Rech. Zones Arides, Géol., 10.]

Paris: CNRS, 1969. 4to. Pp. 527, 7 maps, 11 plates, 276 figs. and tabs., 2 fold. plates of sections, 6 fold. col. geol. maps in pocket, bibl., indices. Paperbound, orig. wrappers.

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