citation:
UNEP/GRID-Arendal, Water Scarcity Index, UNEP/GRID-Arendal Maps and Graphics Library, http://maps.grida.no/go/graphic/water-scarcity-index (Accessed 10 November 2010)
Projected Water Scarcity in the US in 2050
“Water Scarcity Facing 1/3 of US Counties”, peakwater.org, accessed November 9th, 2010 http://peakwater.org/?p=2239
Mona Dai, Nov 9 2010
Mona Dai, Nov 9 2010
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