P. Boonen, M. Dusar, and Y. Somers (1985)
De steenkoolverkenningsboring Opglabbeek-Louwelsbroek
Geological Survey of Belgium., vol. 1985/5 - N°218. Professional Paper of the Geological Survey of Belgium.
RBINS Publication(s)
78 bladzijden, 10 figuren, 13 tabellen
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