1.
The Lithostrotionidae (rugose corals) from the Viséan of the Campine Basin (Belgium and the Netherlands) and their implications for Palaeogeography. ; Les Lithostrotionidae (coraux...
2.
3.
4.
5.
6.
7.
8.
Les mouvements actuels du sol en Belgique; comparaison de deux nivellements IGN (1946-1948 et 1976-1980) ; The current movements of soil in Belgium; comparison of two IGN levelling...