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Submitted on: 23 March 2015.
Revised on: 10 April 2015.
Accepted on: 25 April 2015.
Water Economics and Policy
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Submitted on: 21 October 2008.
Revised on: 30 October 2008.
Accepted on: 23 November 2008.
Water Economics and Policy
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Submitted on: 30 May 2016.
Revised on: 10 June 2016.
Accepted on: 08 July 2016.
Water Economics and Policy---WORLD SCIENTIFIC PUBL CO PTE LTD