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Submitted on: 04 November 2004.
Revised on: 28 January 2005.
Accepted on: 26 March 2005.
___________________JOURNAL OF MICROENCAPSULATION---TAYLOR & FRANCIS LTD
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Submitted on: 23 March 2006.
Revised on: 17 May 2006.
Accepted on: 28 May 2006.
___________________JOURNAL OF MICROENCAPSULATION---TAYLOR & FRANCIS LTD