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Water / Optical materials / Natural resources / Hydrology / Aquatic ecology / Liquid water / Fresh water / Groundwater / Drinking water supply and sanitation in the United States / Water scarcity


The National Water Census * Part of the U.S. Department of the Interior U.S. Geological Survey
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Document Date: 2012-11-09 16:22:47


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File Size: 3,13 MB

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