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Report of the Commission on the International Map of the World 1:1,000,000 / International Geographical Union : VIIth general assembly ; XVIIth International Geographical Congress, Washington, August 8 - 15, 1952

出版	Office of the Secretary-Treasurer, 1952
URL	http://books.google.com.hk/books?id=LycjywAACAAJ&hl=&source=gbs_api