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[unavailable] 8458 [null] 2081 World Meteorological 584
United Nations Envir 127 United States 91 Intergovernmental Oc 84
et al. 70 World Meteorological 65 United Nations Devel 64
admin 60 World Bank 58 United Nations Inter 54
Rome, Italia 41 International Counci 40 United Nations Educa 38
United Nations Frame 32 Sarah Ladislaw 30 Environmental Scienc 28
European Environment 28 Mosey, G. 28