Submitted on: 08 May 2000.
Revised on: 12 August 2000.
Accepted on: 19 September 2000.
___________________Journal of Forest Economics---NOW PUBLISHERS INC
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Submitted on: 16 September 2010.
Revised on: 10 January 2011.
Accepted on: 01 March 2011.
___________________Journal of Forest Economics---NOW PUBLISHERS INC
Submitted on: 25 October 2019.
Revised on: 14 November 2019.
Accepted on: 11 December 2019.
___________________Journal of Forest Economics---NOW PUBLISHERS INC
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