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Submitted on: 07 November 1998.
Revised on: 03 December 1998.
Accepted on: 19 December 1998.
KONA Powder and Particle Journal
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Submitted on: 22 November 2001.
Revised on: 14 December 2001.
Accepted on: 22 December 2001.
KONA Powder and Particle Journal
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Submitted on: 25 November 2011.
Revised on: 08 January 2012.
Accepted on: 04 February 2012.
KONA Powder and Particle Journal
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