Europe ICAO 1:500,000.
Great Britain.War Office.General Staff.Geographical Section.
[London] : War Office for the Ministry of Civil Aviation,
1950-
Relief shown by gradient tints and spot heights.
Various eds.
Graphic index in GSGS central file.
N.W. 58/8. Orkneys and Shetland (2nd ed.) -- N.E. 44/10. Venezia (1st ed.) -- N.E. 48/6. Strasbourg ([1st ed.]) -- N.E. 50/1. Low countries (1st ed.) -- N.E. 52/6. Bremen ([1st ed.])