Submitted on: 06 May 2016.
Revised on: 07 July 2016.
Accepted on: 01 August 2016.
___________________GEOFORUM---PERGAMON-ELSEVIER SCIENCE LTD
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Submitted on: 08 October 2004.
Revised on: 07 January 2005.
Accepted on: 10 February 2005.
___________________GEOFORUM---PERGAMON-ELSEVIER SCIENCE LTD
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Submitted on: 07 May 2008.
Revised on: 05 July 2008.
Accepted on: 13 August 2008.
___________________GEOFORUM---PERGAMON-ELSEVIER SCIENCE LTD
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Submitted on: 15 April 2013.
Revised on: 31 July 2013.
Accepted on: 25 September 2013.
___________________GEOFORUM---PERGAMON-ELSEVIER SCIENCE LTD