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Submitted on: 03 December 2007.
Revised on: 30 January 2008.
Accepted on: 24 February 2008.
___________________HYDROGEOLOGY JOURNAL---SPRINGER
Submitted on: 09 December 2013.
Revised on: 30 January 2014.
Accepted on: 28 February 2014.
___________________HYDROGEOLOGY JOURNAL---SPRINGER
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