P. Buurman, A.G. Jongmans, C. Kasse, B. van Lagen. Discussion: Oil seepage or fossil podzol? An Early Oligocene oil seepage at the southern rim of the North Sea Basin, near Leuven (Belgium) by E.D. van Riessen & N. Vandenberghe, Geologie en Mijnbouw 74: 301-312 (1996). njg [Internet]. 1998Jan.1 [cited 2026Apr.6];77:93-8. Available from: https://njgjournal.nl/index.php/njg/article/view/12198