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Submitted on: 14 May 2004.
Revised on: 05 September 2004.
Accepted on: 06 October 2004.
___________________International Journal for the History of Engineering & Technology
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Submitted on: 21 August 2002.
Revised on: 18 October 2002.
Accepted on: 09 November 2002.
___________________International Journal for the History of Engineering & Technology
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