digi.library.tu.ac.th - /research_paper/086/


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10/14/2016 1:15 PM 547010 01title-table.pdf
10/14/2016 1:15 PM 505623 02chapter1.pdf
10/14/2016 1:15 PM 714917 03chapter2.pdf
10/14/2016 1:15 PM 633999 04chapter3.pdf
10/14/2016 1:15 PM 1334848 05chapter4.pdf
10/14/2016 1:15 PM 837601 06chapter5.pdf
10/14/2016 1:15 PM 742472 07references-biography.pdf