1931. Nouv. Mém. Soc. Belge Géol. Ser. 4to, Mém. 5; 14 pp. 1 fold. tab. 1 large fold & col. geol. map 1:1.000.000, ca 100x120 cm. Orig. wrps. with libr. stamp, spine repaired with paper tape, contents and map very good, lg4to.
1931. Nouv. Mém. Soc. Belge Géol. Ser. 4to, Mém. 5; 14 pp. 1 fold. tab. 1 large fold & col. geol. map 1:1.000.000, ca 100x120 cm. Orig. wrps. with libr. stamp, spine repaired with paper tape, contents and map very good, lg4to.
1950, Maroc Serv. Géol. Notes et Mém. 80; 435 pp. 76 fig. 22 fold. plts. with maps loosely inserted. Orig. wrps. a bit worn along spine, contents very good, uncut, 4to.
1963. Comp. franc. Pétrol. Notes &et Mémoires No. 6; 30 pp. 4 plts. h.t. folding-out, many plts. h.t. on stiff paper with 100 micro-phot. Orig. wrps. libr. stamp on title page, base of spine just a bit worn, otherwise very good, lg4to.