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[Geological Survey of England and Wales : one inch to the mile map. New Series.] Merthyr Tydfil, drift, sheet 231
- Southampton : Director General, Ordnance Survey, 1900.
Great Britain. Ordnance Survey of England. Great Britain. Geological Survey of England and Wales. Sheet 231 drift. Geological Survey of Great Britain. North Decimal Degree 51.866700. South Decimal Degree 51.7000. East Decimal Degree -3.3333. West Decimal Degree -3.7500. 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 on the one-inch scale, by Sir H. T. De la Beche et al. Published on Sheets 42 and 36 Old Series. Re-surveyed on the six-inch scale by A. Strahan, M. A. (West Central part), W. Gibson (S. part) and T.C. Cantril, B. Sc., (N. Part). Published with Drift Feb 1900. Revisions on western margin 1902. Further revisions to 1920.".
- Cross section, Geology, and Wales—Maps
- Call number:
- G5751.C5.s63.E5W3 sh 231 (d)
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