Abstract
THE accuracy of modern levelling is a thing which always causes surprise when the great number of separate operations which enter into the composition of a line of any length is considered.
Ordnance Survey; The Second Geodetic Levelling of England and Wales, 1912–1921.
Published, by Order of the Ministry of Agriculture and Fisheries, by Col. Sir Charles Close., Director-General of the Ordnance Survey, Southampton, 1921. Pp. 62 + 46 plates. (London: H.M. Stationery Office, 1922.) 17s. 6d. net.
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C., G. Ordnance Survey: The Second Geodetic Levelling of England and Wales, 1912–1921 . Nature 111, 7–9 (1923). https://doi.org/10.1038/111007a0
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DOI: https://doi.org/10.1038/111007a0
