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The Polar Regions
Michael Allaby
出版Grolier Educational, 1999
ISBN07172934249780717293421
URLhttp://books.google.com.hk/books?id=0cHenbn66TgC&hl=&source=gbs_api
註釋Describes the polar regions (tundra, ice cap, and permanent ice), defining important features, animals, and environmental issues.