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Submitted on: 20 April 1999.
Revised on: 02 July 1999.
Accepted on: 16 August 1999.
___________________CLAYS AND CLAY MINERALS---SPRINGER
Submitted on: 24 June 2012.
Revised on: 31 July 2012.
Accepted on: 25 August 2012.
___________________CLAYS AND CLAY MINERALS---SPRINGER
Submitted on: 02 February 2000.
Revised on: 12 March 2000.
Accepted on: 23 April 2000.
___________________CLAYS AND CLAY MINERALS---SPRINGER
Submitted on: 23 September 2011.
Revised on: 09 November 2011.
Accepted on: 29 November 2011.
___________________CLAYS AND CLAY MINERALS---SPRINGER
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Submitted on: 15 July 2009.
Revised on: 12 August 2009.
Accepted on: 26 September 2009.
___________________CLAYS AND CLAY MINERALS---SPRINGER
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