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Water-quality Data Analysis of the Upper Gunnison River Watershed, Colorado, 1989-99
Jason J. GurdakAdrienne I. GreveNorman E. Spahr
出版U.S. Department of the Interior, U.S. Geological Survey, 2002
URLhttp://books.google.com.hk/books?id=9ofuAAAAMAAJ&hl=&source=gbs_api
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