Indefatigable sheet, 53°N-02°E, Sea Bed Sediments and Holocene geology
1:250 000 series British Geological Survey and Geolo¬gical Survey of The Netherlands.
Harrison, D.J., C. Laban & R.T.E. Schüttenhelm, 1987
1:250 000 series British Geological Survey and Geolo¬gical Survey of The Netherlands.
Harrison, D.J., C. Laban & R.T.E. Schüttenhelm, 1987