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US Geological Survey 2299 EurekAlert 1170 United States Depart 1141
RAND Corporation 670 us environmental pro 630 Center for Strategic 597
Science 481 US Environmental Pro 397 Rand Corporation 332
World Resources Inst 309 US Geological Survey 215 Scripps Institution 175
National Academies P 153 Environmental Protec 144 Water Environment Fe 130
Seismological Societ 114 US National Scientif 97 Convention on Biolog 90
WEF Stormwater Repor 87 Woods Hole Oceanogra 72