British Antarctic Territory.
Great Britain.Directorate of Overseas Surveys.
Great Britain.Directorate of Colonial Surveys.
[Tolworth, Eng.] : Directorate of Overseas Surveys,
1954?-
Relief shown by contours and spot heights.
"Series D510."
Each sheet contains "Compilation diagram" and "Index to adjoining sheets."
Some sheets published by the Directorate of Colonial Surveys.
Graphic index in central file.