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Submitted on: 13 July 2013.
Revised on: 26 September 2013.
Accepted on: 14 November 2013.
___________________Environmental Science-Water Research & Technology
Submitted on: 10 June 1999.
Revised on: 10 July 1999.
Accepted on: 30 August 1999.
___________________Environmental Science-Water Research & Technology
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Submitted on: 08 January 2003.
Revised on: 03 March 2003.
Accepted on: 16 March 2003.
___________________Environmental Science-Water Research & Technology
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Submitted on: 15 August 2011.
Revised on: 23 September 2011.
Accepted on: 14 October 2011.
___________________Environmental Science-Water Research & Technology
Submitted on: 05 April 2001.
Revised on: 22 May 2001.
Accepted on: 15 July 2001.
___________________Environmental Science-Water Research & Technology
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