Nigeria 1:50,000.
Great Britain.Directorate of Overseas Surveys.
Great Britain.Directorate of Colonial Surveys.
Tolworth, Surrey,
1955-
Includes various issues of some sheets. Some, with series designation D.C.S. 30, were issued by the Directorate of Colonial Surveys. Many of these sheets have edition note "Preliminary Plot."
Some sheets are designated as series D.O.S. 30.
Standard map series designation on some sheets: Series G 742.
Some sheets have title: Southern Cameroons.
"Projection: Transverse Mercator."
Relief shown variously by contours, hachures, and spot heights.
In margin: Boundary diagram.--Index to adjoining sheets.--Reliability diagram.
Interfiled with: Nigeria Federal Surveys maps.
Graphic index in central file.