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Alaska and adjacent Canada, Arctic Canada, North Atlantic Islands
American Geographical Society of New York. Department of Exploration and Field Research
出版Corps of Engineers, U. S. Army, Technical Information Analysis Center, Cold Regions Research and Engineering Laboratory, 1975
URLhttp://books.google.com.hk/books?id=DeRj7Kbw0hUC&hl=&source=gbs_api
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