Bouckaert, J. & Remy, J., 1967. Carte des mines du bassin houiller de la Basse-Sambre et notice pédologique. Memoirs of the Geological Survey of Belgium, 7, 56 p.
The printed version of the Memoirs Vol. 7 is available for sale at the GSB. For ordering, please contact gsb@naturalsciences.be
