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Submitted on: 22 July 2016.
Revised on: 10 October 2016.
Accepted on: 05 December 2016.
___________________International Journal of Minerals Metallurgy and Materials
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Submitted on: 11 August 2004.
Revised on: 31 October 2004.
Accepted on: 06 December 2004.
___________________International Journal of Minerals Metallurgy and Materials
Submitted on: 07 May 2001.
Revised on: 20 June 2001.
Accepted on: 25 July 2001.
___________________International Journal of Minerals Metallurgy and Materials
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