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Submitted on: 29 October 2008.
Revised on: 14 February 2009.
Accepted on: 17 March 2009.
___________________ENVIRONMENT AND DEVELOPMENT ECONOMICS
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Submitted on: 02 November 2000.
Revised on: 22 December 2000.
Accepted on: 08 January 2001.
___________________ENVIRONMENT AND DEVELOPMENT ECONOMICS
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Submitted on: 05 July 1999.
Revised on: 06 August 1999.
Accepted on: 16 September 1999.
___________________ENVIRONMENT AND DEVELOPMENT ECONOMICS
Submitted on: 08 June 2017.
Revised on: 12 August 2017.
Accepted on: 19 September 2017.
___________________ENVIRONMENT AND DEVELOPMENT ECONOMICS
Submitted on: 30 August 2009.
Revised on: 20 October 2009.
Accepted on: 17 November 2009.
___________________ENVIRONMENT AND DEVELOPMENT ECONOMICS
Submitted on: 27 August 2002.
Revised on: 21 December 2002.
Accepted on: 15 February 2003.
___________________ENVIRONMENT AND DEVELOPMENT ECONOMICS
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