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Dimensions and Areas of Maps of the National Topographic System of Canada, by L.M. Sebert [and] M.R. Munro

L. M. Sebert

出版	Technical Information and Sales, Surveys and Mapping Branch, Department of Energy, Mines and Resources, 1972
URL	http://books.google.com.hk/books?id=QCO0swEACAAJ&hl=&source=gbs_api