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Department of Conser 1212 EurekAlert 1049 EurekAlert! - Earth 314
United States Depart 218 EurekAlert! 197 Science 137
UK Environment Agenc 135 RAND Corporation 130 UN Sustainable Devel 89
Australian Resources 83 SciDev.Net 72 Department for Envir 69
gov.uk-Department fo 68 American Geophysical 67 Department for Busin 63
European Space Agenc 63 Center for Strategic 60 Science X network 57
gov.uk - environment 56 US Geological Survey 53