Nautical science in its relation to practical navigation, together with a study of the tides and tidal currents (1910)
Poor, Charles Lane, 1866- · New York, London, G. P. Putnam's sons · leaf 298
The Cause of the Tides 263 Fig, 25.—The OaciUaiory Areas of the North Atlantic The Roman numbets (XII) indicate the Times of High Water; the Arabic numbers (5) show the me n Rise and Fall of the Tide
Nautical astronomy
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