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Hydrographical surveying : a description of means and methods employed in constructing marine charts (1920)

Wharton, W. J. L. (William James Lloyd), 1843-1905, Field, Arthur Mostyn, 1855- · London : J. Murray · leaf 540

An illustration from Hydrographical surveying : a description of means and methods employed in constructing marine charts, 1920, leaf 540
Fig. I. CHAP. XXL] SCHEME OF TRIANGULATION 511 … Fig. II. 512 HYDROGRAPHICAL SURVEYING [chap, xxi AREA B E Clear

Hydrographic surveying · Nautical charts

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