1.
Faune du Calcaire carbonifère de la Belgique. I. Poissons et genre Nautile
Faune du Calcaire carbonifère de la Belgique. III (Avec un atlas de 21 planches in-folio). Gastéropodes
Field trip A1: The Uppermost Devonian and Lower carboniferous in the type area of Southern Belgium
Interaction between eustacy and block-faulting in the Carboniferous of the Visé-Maastricht area (Belgium, the Netherlands)
2.
Uppermost Devonian and Dinantian Rugose Corals from Southern Belgium and surrounding areas
Field trip 3: Uppermost Devonian and Lower Carboniferous of Southern Belgium