1938. Mém. Mus. Roy. Hist. Nat. Belg. 83; 58 pp. 2 fold-out plt. with fossils, mostly brachiopods and molluscs. Orig. wrps. small libr. stamp on front cover, lg4to.
La faune de l'Assise de Winenne (Emsien moyen) sur les bordures méridionale et orientale du Bassin de Dinant.
1932. Mém. Mus. Roy. Hist. Nat. Belg. 52; 102 pp. 5 fold-out plts. h.t. with mostly brachiopods and molluscs. Orig. wrps. front cover with libr. stamp, repaired tears and frayed margins, otherwise very good very good, uncut, lg4to.