Geological Survey of Great Britain. Great Britain. Geological Survey of England and Wales. Sheet 206 drift. Great Britain. Ordnance Survey of England. North Decimal Degree 52.166700. South Decimal Degree 52.0000. East Decimal Degree 0.8833. West Decimal Degree 0.4667. In upper left corner: Ordnance Survey of England (Third Edition). Relief shown by contour interval and spot heights. Transverse Mercator projection. National grid system. "Geological survey by F. J. Bennett et al. Published on the Old Series Sheet 47, 48, 50, and 51 in 1881 and 1882. The area around Sudbury was re-surveyed on the six-inch scale by P. G. H. Boswell, 1911-1913. Transferred to the New Series map, with minor corrections and published 1928. Approximate boundaries of Eocene formations beneath Drift inserted 1947.".
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