Authors: Arthurton, R. S. --- Frost, D. V. --- Greig, D. C. --- Wilson, A. A. --- Evans, C. D. R. --- et al. Ransome, C. R. --- Foss, C. --- Briden, J. C. --- British Geological Survey
Year: 1980 Publisher: Southampton Ordnance Survey for the Institute of Geological Sciences