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Submitted on: 10 May 2012.
Revised on: 14 July 2012.
Accepted on: 25 August 2012.
___________________International Journal of Masonry Research and Innovation
Submitted on: 07 July 2009.
Revised on: 02 November 2009.
Accepted on: 24 December 2009.
___________________International Journal of Masonry Research and Innovation
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