Gulf of Aden 1968

Depths shown by isolines and soundings.; "Bathymetric contours and soundings compiled by the National Institute of Oceanography".; "Automatic cartography by the Royal College of Art, London".; "This is the first map that the Experimental Cartography Unit of the Royal College of Art has produced by automatic cartography."; "It is part of the contribution from the British National Institute of Oceanography to the Atlas of Geography and Geophysics of the Indian Ocean which summarizes the results of the International Indian Ocean Expedition."; Includes index to the adjoining sheets.; Sheets 1, 2, 4 and 5 not published based on letter from publisher March 18, 1970.; "E.C.U. map ref. no. 1."Color;1:2,000,00