Submitted on: 19 October 2002.
Revised on: 26 November 2002.
Accepted on: 19 December 2002.
Sustainable Futures
Submitted on: 01 December 2016.
Revised on: 13 January 2017.
Accepted on: 28 January 2017.
Sustainable Futures---ELSEVIER
Submitted on: 30 July 2019.
Revised on: 16 August 2019.
Accepted on: 22 August 2019.
Sustainable Futures
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Submitted on: 18 December 1998.
Revised on: 11 January 1999.
Accepted on: 22 January 1999.
Sustainable Futures
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