Authors: ZIJLSTRA J.J.P.

Citation: Zijlstra J.j.p, About the depth of deposition of the Maastrichtian Chalk of the type area, Annales de la Societe Geologique du Nord , 5(3), 1997, pp. 207-213

Authors: DE GRAAFF J.W.M. SCHUILING R.D. SPECK P.J.H.R. ZIJLSTRA J.J.P.

Citation: De Graaff J.w.m et al., Geochemical Engineering in Chalk: Neutralization of Waste Sulfuric Acid, Annales de la Societe Geologique du Nord , 5(4), 1997, pp. 345-350