Submitted on: 29 August 2003.
Revised on: 14 December 2003.
Accepted on: 08 January 2004.
___________________Advanced Steel Construction---HONG KONG INST STEEL CONSTRUCTION
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Submitted on: 02 June 1998.
Revised on: 09 July 1998.
Accepted on: 08 August 1998.
___________________Advanced Steel Construction---HONG KONG INST STEEL CONSTRUCTION
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