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Submitted on: 16 July 2002.
Revised on: 13 November 2002.
Accepted on: 06 January 2003.
___________________ENVIRONMENTAL & ENGINEERING GEOSCIENCE
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Submitted on: 22 December 2019.
Revised on: 09 February 2020.
Accepted on: 26 March 2020.
___________________ENVIRONMENTAL & ENGINEERING GEOSCIENCE
Submitted on: 21 May 2006.
Revised on: 23 June 2006.
Accepted on: 09 July 2006.
___________________ENVIRONMENTAL & ENGINEERING GEOSCIENCE
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