Cartographic symbols and specifications of the National Topographic System 1:25,000 - 1:50,000 = Spécifications des symboles cartographiques du Système national de référence cartographique
By: Surveys and Mapping Branch, Dept. of Energy, Mines and Resources.
Publisher: The Branch]
Published: 1977
Place of publication: [Ottawa
Language: eng
Number of pages: 12
Subjects: Maps -- Symbols
Notes: Text in English and French.