Seven fold. sheets ([14]p. : 7 maps (6 col.) and 'Logarithmic speed, time and distance scale' (leaf) in portfolio. - Book and portfolio in slip case.
Previous ed.: 1950.
Includes index.
Ocean passages for the world. ISBN 0707700558. Published by Hydrographer of the Navy in 1973. Publication and catalogue information, links to buy online and reader comments.