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共38条，第1-20条
United States Depart 227 EurekAlert 104 us environmental pro 58
Center for Strategic 55 Science 55 World Resources Inst 39
Bureau of Ocean Ener 36 US Geological Survey 30 Environmental Protec 26
US Environmental Pro 26 Scripps Institution 25 US Geological Survey 24
National Center of A 15 RAND Corporation 15 Water Environment Fe 10
National Academy of 9 Woods Hole Oceanogra 9 US National Scientif 7
Massachusetts Instit 6 National Academies P 6