1923. Canada. Topographical Survey. Rellief shown by spot heights. Depths shown by soundings.; Includes table of distances and 2 inset maps.; "1923 edition, corrected to 1st December ... Topographical Survey of Canada (Ottawa).
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1923. Canada. Topographical Survey. Relief shown by spot heights. Depths shown by soundings.; Includes table of distances, notes, source information and 2 inset maps.; At head of titl... Topographical Survey of Canada (Ottawa).
1923. Canada. Topographical Survey. Relief shown by spot heights. Depths shown by soundings.; Includes table of distances, notes, source information and 1 inset map.; At head of title... Topographical Survey of Canada (Ottawa).
1923. Canada. Topographical Survey. Relief shown by spot heights. Depths shown by soundings.; Includes table of distances, notes, sources of information and 2 inset maps.; At head of ... Topographical Survey of Canada (Ottawa).