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Ground-water Flow Direction, Water Quality, Recharge Sources, and Age, Great Sand Dunes National Monument, South-central Colorado, 2000-2001
Michael RupertL. Niel Plummer
出版U.S. Department of the Interior, U.S. Geological Survey, 2004
URLhttp://books.google.com.hk/books?id=1qN9CnanXYcC&hl=&source=gbs_api
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