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2. Water for a Sustainable World-The United Nations World Water Development Report 2015 http://unesdoc.unesco.org/images/0023/002318/231823E.pdf
3. World Water Day 2014: UN Stresses Water and Energy Issues 2014 https://unu.edu/media-relations/releases/wwd2014-un-stresses-water-energy-issues.html
4. Facts and Figures-Managing Water under Uncertainty and Risk 2014 http://www.unesco.org/fileadmin/MULTIMEDIA/HQ/SC/pdf/WWAP_WWDR4%20Facts%20and%20Figures.pdf
5. Desalination by the Numbers 2016 http://idadesal.org/desalination-101/desalination-by-the-numbers/