Geological Survey of Great Britain. Great Britain. Geological Survey of England and Wales. Sheet 138 solid and drift. Great Britain. Ordnance Survey of England. North Decimal Degree 52.916700. South Decimal Degree 52.7500. East Decimal Degree -2.4833. West Decimal Degree -2.9167. In upper left margin: Ordnance Survey of Great Britain. Relief shown by contour interval and spot heights.Transverse Mercator projection. National grid system. "Original geological survey published and revised on Old Series one-inch maps 73 S.W., 73 S.E., 61 N.W. & 61 N.E. in 1855 and 1868. Resurveyed (on the six-inch scale) in 1911-22 by R. W. Pocock et al. Published 1924 in Solid and Drift Edition, J.S. Flett Director. Drift Edition reprinted 1949.".
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