Submitted on: 03 February 2010.
Revised on: 08 April 2010.
Accepted on: 21 May 2010.
___________________APPLIED CLAY SCIENCE---ELSEVIER
Submitted on: 14 November 2017.
Revised on: 24 February 2018.
Accepted on: 09 April 2018.
___________________APPLIED CLAY SCIENCE---ELSEVIER
Submitted on: 14 November 2000.
Revised on: 25 January 2001.
Accepted on: 15 February 2001.
___________________APPLIED CLAY SCIENCE---ELSEVIER
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Submitted on: 30 March 2013.
Revised on: 24 June 2013.
Accepted on: 18 July 2013.
___________________APPLIED CLAY SCIENCE---ELSEVIER