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Submitted on: 14 April 2000.
Revised on: 12 June 2000.
Accepted on: 19 July 2000.
___________________GEOTECHNIQUE---EMERALD GROUP PUBLISHING LTD
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Submitted on: 20 January 2000.
Revised on: 03 April 2000.
Accepted on: 04 May 2000.
___________________GEOTECHNIQUE---EMERALD GROUP PUBLISHING LTD
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Submitted on: 25 June 2007.
Revised on: 16 July 2007.
Accepted on: 08 September 2007.
___________________GEOTECHNIQUE---EMERALD GROUP PUBLISHING LTD
Submitted on: 23 March 1999.
Revised on: 16 July 1999.
Accepted on: 15 August 1999.
___________________GEOTECHNIQUE---EMERALD GROUP PUBLISHING LTD
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