mapped by Geological Surveys of Finland (GTK), Norway (NGU) and Sweden (SGU) ; in cooperation with Swedish Geological (SGAB) and Geological Survey of Greenland (GGU) ; compiled by B. Bølviken ... [et al.]Geological Survey of Sweden]1986 printing
editors, Naz Ahmed Shaikh, Nils-Gunnar Wik ; sponsored by the Nordic Research Courses (the Nordic Council of Ministers), the Swedish Board for Technical Development (STU), and the Geological Survey of Sweden (SGU)Nordic Society for Clay Research[1986]