Submitted on: 08 January 2002.
Revised on: 11 February 2002.
Accepted on: 20 March 2002.
___________________Journal of Applied Water Engineering and Research
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Submitted on: 13 August 2008.
Revised on: 21 October 2008.
Accepted on: 12 November 2008.
___________________Journal of Applied Water Engineering and Research
Submitted on: 21 March 2010.
Revised on: 12 May 2010.
Accepted on: 01 July 2010.
___________________Journal of Applied Water Engineering and Research
Submitted on: 27 July 2001.
Revised on: 27 October 2001.
Accepted on: 14 December 2001.
___________________Journal of Applied Water Engineering and Research
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Submitted on: 21 January 1998.
Revised on: 18 March 1998.
Accepted on: 13 April 1998.
___________________Journal of Applied Water Engineering and Research