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Submitted on: 03 November 2007.
Revised on: 03 January 2008.
Accepted on: 20 January 2008.
___________________Cleaner Environmental Systems---ELSEVIER
Submitted on: 13 December 2023.
Revised on: 03 January 2024.
Accepted on: 12 February 2024.
___________________Cleaner Environmental Systems---ELSEVIER
Submitted on: 19 September 2004.
Revised on: 22 November 2004.
Accepted on: 04 January 2005.
___________________Cleaner Environmental Systems---ELSEVIER
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