International Nitrogen Initiative
http://www.initrogen.org/
Nitrogen in Europe
Current Problems & Future Solutions
http://www.nine-esf.org/ena_open_review/info
UNESCO
United Nations Educational, Scientific and Cultural Organization
http://www.unesco.org/
Water for life
Safe water for the world
http://www.waterforlife.org/
World Water Council
http://www.worldwatercouncil.org/
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