1940. Inst. Geol. Paleont. Univ. Milano (P) No. 23; pp. 139-156, 1 fig. 1 pl. h.t. with molluscs and brachiopods. Orig. wrps. with libr. stamp, very good, 4to.
1921. US Geological Survey Professional Paper 129-B; pp. 23-37, 4 plts. h.t. with fossil molluscs. Publication without covers, as issued, libr. ticket in corner of title page, 4to.
1908. Inst. R. Sci. natur. Belg. Mém. No. 137; 76 pp. 8 plts. plus descript. pages h.t. New printed stiff wrps. spine with cloth tape, contents very good, lg4to.