Kalsbeek F, Hermansen B, Knudsen C, Thorning L, Thorsen M. Co-operation with the Geological Survey Department of Ghana. GEUS Bulletin [Internet]. 2004 Jul. 20 [cited 2024 Nov. 22];4:93-6. Available from: https://geusbulletin.org/index.php/geusb/article/view/4796