prince of songkla universitykb.psu.ac.th/psukb/bitstream/2010/6885/16/chapter3_99...created date...
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- Prince of Songkla Universitykb.psu.ac.th/psukb/bitstream/2010/6885/16/Chapter3_99...Created Date 6/18/2005 1:21:47 PM
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