Author: LERICHE, M.
Title: Nouvelles observations sur les terrains tertiaires du sud-est de l'Avesnois. La faune du Bruxellien de l'Avesnois.
Description: 1921, Bull. Soc. Belge Geol. XXXI-2; pp. 167-201, 6 fig.1 double-paged plt. w. maps, 2 plts. h.t. w. molluscs. Orig. wrps. extract, uncut, very good.

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