Submitted on: 14 July 2022.
Revised on: 06 October 2022.
Accepted on: 17 November 2022.
___________________Journal of Benefit-Cost Analysis
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Submitted on: 13 March 2008.
Revised on: 16 June 2008.
Accepted on: 10 July 2008.
___________________Journal of Benefit-Cost Analysis
Submitted on: 02 January 2000.
Revised on: 20 March 2000.
Accepted on: 15 April 2000.
___________________Journal of Benefit-Cost Analysis
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