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From Chinese Government surveys from 1931 to 1934 (Outside soundings in slanting figures, and islands in light lines near lower border of the chart... U.S. Navy Hydrographic Office.
From surveys by the Chinese Maritime Customs between 1916 and 1930 ; published May, 1916, at the Hydrographic Office, under the authority of the Se... U.S. Navy Hydrographic Office.
Board of Economic Warfare ; Drawn in R. and A., OSS. "Reproduced in OSS." "No. 1385 ; Februay 10, 1943". The Board.
Sketch by Lieut. C.J. Bullock, R.N., G. Robinson, Sec. Master and A.S. Webster, Mast. Asst., R.N., 1859. With corrections and additions from variou... Admiralty Hydrographic Office.
levee en 1768, par Mr. le Chev. Grenier ; Guill. de la Haye Relief shown by soundings Coordinates approximate and based on Greenwich meridian Bar s... [Chez Demonville, Imprimeur - Libraire de l'Académie Françoise] and [Chez Malassis, Imprimeur - Libraire de la Marine].
organizado pelo enjenheiro Roberto Miller ... sob a direção do chefe topógrafo Guilherme Lane. Legend. Relief shown by shading and spot heights. Co... Ministério da Viação e Obras Públicas, Inspectoria de Obras contra as Seccas.