Submitted on: 11 May 2017.
Revised on: 11 June 2017.
Accepted on: 08 August 2017.
___________________ENGINEERING GEOLOGY---ELSEVIER
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Submitted on: 15 March 2008.
Revised on: 21 June 2008.
Accepted on: 24 July 2008.
___________________ENGINEERING GEOLOGY---ELSEVIER
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