Submitted on: 24 November 1999.
Revised on: 28 January 2000.
Accepted on: 10 March 2000.
___________________ENVIRONMENT AND DEVELOPMENT ECONOMICS
Submitted on: 14 April 2018.
Revised on: 06 May 2018.
Accepted on: 12 June 2018.
___________________ENVIRONMENT AND DEVELOPMENT ECONOMICS
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Submitted on: 06 May 2016.
Revised on: 06 July 2016.
Accepted on: 13 August 2016.
___________________ENVIRONMENT AND DEVELOPMENT ECONOMICS
Submitted on: 24 September 2004.
Revised on: 19 October 2004.
Accepted on: 09 November 2004.
___________________ENVIRONMENT AND DEVELOPMENT ECONOMICS
Submitted on: 27 March 2011.
Revised on: 03 July 2011.
Accepted on: 14 July 2011.
___________________ENVIRONMENT AND DEVELOPMENT ECONOMICS
Submitted on: 28 October 2009.
Revised on: 30 December 2009.
Accepted on: 17 February 2010.
___________________ENVIRONMENT AND DEVELOPMENT ECONOMICS
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