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etheses.psru.ac.thetheses.psru.ac.th/lib-irpsru/sites/default/files/site/default/thesis/ch2_62.pdfRajabhat University . Created Date: 7/5/2005 4:10:33 PM

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Page 1: etheses.psru.ac.thetheses.psru.ac.th/lib-irpsru/sites/default/files/site/default/thesis/ch2_62.pdfRajabhat University . Created Date: 7/5/2005 4:10:33 PM
Page 2: etheses.psru.ac.thetheses.psru.ac.th/lib-irpsru/sites/default/files/site/default/thesis/ch2_62.pdfRajabhat University . Created Date: 7/5/2005 4:10:33 PM
Page 3: etheses.psru.ac.thetheses.psru.ac.th/lib-irpsru/sites/default/files/site/default/thesis/ch2_62.pdfRajabhat University . Created Date: 7/5/2005 4:10:33 PM
Page 4: etheses.psru.ac.thetheses.psru.ac.th/lib-irpsru/sites/default/files/site/default/thesis/ch2_62.pdfRajabhat University . Created Date: 7/5/2005 4:10:33 PM
Page 5: etheses.psru.ac.thetheses.psru.ac.th/lib-irpsru/sites/default/files/site/default/thesis/ch2_62.pdfRajabhat University . Created Date: 7/5/2005 4:10:33 PM
Page 6: etheses.psru.ac.thetheses.psru.ac.th/lib-irpsru/sites/default/files/site/default/thesis/ch2_62.pdfRajabhat University . Created Date: 7/5/2005 4:10:33 PM
Page 7: etheses.psru.ac.thetheses.psru.ac.th/lib-irpsru/sites/default/files/site/default/thesis/ch2_62.pdfRajabhat University . Created Date: 7/5/2005 4:10:33 PM
Page 8: etheses.psru.ac.thetheses.psru.ac.th/lib-irpsru/sites/default/files/site/default/thesis/ch2_62.pdfRajabhat University . Created Date: 7/5/2005 4:10:33 PM
Page 9: etheses.psru.ac.thetheses.psru.ac.th/lib-irpsru/sites/default/files/site/default/thesis/ch2_62.pdfRajabhat University . Created Date: 7/5/2005 4:10:33 PM
Page 10: etheses.psru.ac.thetheses.psru.ac.th/lib-irpsru/sites/default/files/site/default/thesis/ch2_62.pdfRajabhat University . Created Date: 7/5/2005 4:10:33 PM
Page 11: etheses.psru.ac.thetheses.psru.ac.th/lib-irpsru/sites/default/files/site/default/thesis/ch2_62.pdfRajabhat University . Created Date: 7/5/2005 4:10:33 PM
Page 12: etheses.psru.ac.thetheses.psru.ac.th/lib-irpsru/sites/default/files/site/default/thesis/ch2_62.pdfRajabhat University . Created Date: 7/5/2005 4:10:33 PM
Page 13: etheses.psru.ac.thetheses.psru.ac.th/lib-irpsru/sites/default/files/site/default/thesis/ch2_62.pdfRajabhat University . Created Date: 7/5/2005 4:10:33 PM
Page 14: etheses.psru.ac.thetheses.psru.ac.th/lib-irpsru/sites/default/files/site/default/thesis/ch2_62.pdfRajabhat University . Created Date: 7/5/2005 4:10:33 PM
Page 15: etheses.psru.ac.thetheses.psru.ac.th/lib-irpsru/sites/default/files/site/default/thesis/ch2_62.pdfRajabhat University . Created Date: 7/5/2005 4:10:33 PM
Page 16: etheses.psru.ac.thetheses.psru.ac.th/lib-irpsru/sites/default/files/site/default/thesis/ch2_62.pdfRajabhat University . Created Date: 7/5/2005 4:10:33 PM
Page 17: etheses.psru.ac.thetheses.psru.ac.th/lib-irpsru/sites/default/files/site/default/thesis/ch2_62.pdfRajabhat University . Created Date: 7/5/2005 4:10:33 PM
Page 18: etheses.psru.ac.thetheses.psru.ac.th/lib-irpsru/sites/default/files/site/default/thesis/ch2_62.pdfRajabhat University . Created Date: 7/5/2005 4:10:33 PM
Page 19: etheses.psru.ac.thetheses.psru.ac.th/lib-irpsru/sites/default/files/site/default/thesis/ch2_62.pdfRajabhat University . Created Date: 7/5/2005 4:10:33 PM
Page 20: etheses.psru.ac.thetheses.psru.ac.th/lib-irpsru/sites/default/files/site/default/thesis/ch2_62.pdfRajabhat University . Created Date: 7/5/2005 4:10:33 PM
Page 21: etheses.psru.ac.thetheses.psru.ac.th/lib-irpsru/sites/default/files/site/default/thesis/ch2_62.pdfRajabhat University . Created Date: 7/5/2005 4:10:33 PM
Page 22: etheses.psru.ac.thetheses.psru.ac.th/lib-irpsru/sites/default/files/site/default/thesis/ch2_62.pdfRajabhat University . Created Date: 7/5/2005 4:10:33 PM
Page 23: etheses.psru.ac.thetheses.psru.ac.th/lib-irpsru/sites/default/files/site/default/thesis/ch2_62.pdfRajabhat University . Created Date: 7/5/2005 4:10:33 PM
Page 24: etheses.psru.ac.thetheses.psru.ac.th/lib-irpsru/sites/default/files/site/default/thesis/ch2_62.pdfRajabhat University . Created Date: 7/5/2005 4:10:33 PM
Page 25: etheses.psru.ac.thetheses.psru.ac.th/lib-irpsru/sites/default/files/site/default/thesis/ch2_62.pdfRajabhat University . Created Date: 7/5/2005 4:10:33 PM
Page 26: etheses.psru.ac.thetheses.psru.ac.th/lib-irpsru/sites/default/files/site/default/thesis/ch2_62.pdfRajabhat University . Created Date: 7/5/2005 4:10:33 PM
Page 27: etheses.psru.ac.thetheses.psru.ac.th/lib-irpsru/sites/default/files/site/default/thesis/ch2_62.pdfRajabhat University . Created Date: 7/5/2005 4:10:33 PM