England, Wales and Northern Ireland /
Great Britain.Ordnance Survey.
[London] : The Survey,
[1966]
Relief shown by shading, contours and spot heights. Depths shown by bathymetric isolines.
In upper right margin: NN-30 International map of the world 1:1,000,000 Carte internationale du monde au 1:1,000,000.
Includes "Index to adjoining sheets" and "Reliability diagram."