Guyana 1:50,000.
Great Britain.Directorate of Overseas Surveys.
British Guiana.Ministry of Agriculture, Forests and Lands.
[Tolworth, Surrey] : Directorate of Overseas Surveys,
1953-
Relief shown by hachures, form lines, spot heights and pictorially.
Various eds.
Earlier maps have title: British Guiana 1:50,000; some constructed by the Ministry of Agriculture, Forests and Lands, British Guiana.
Some sheets are provisional.
Includes index to adjoining sheets, and magnetic variation diagram.
Graphic index in central file