journal.feu.ac.thjournal.feu.ac.th/pdf/v4i2t2a4.pdf · created date: 12/11/2012 3:36:32 pm

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Page 1: journal.feu.ac.thjournal.feu.ac.th/pdf/v4i2t2a4.pdf · Created Date: 12/11/2012 3:36:32 PM
Page 2: journal.feu.ac.thjournal.feu.ac.th/pdf/v4i2t2a4.pdf · Created Date: 12/11/2012 3:36:32 PM
Page 3: journal.feu.ac.thjournal.feu.ac.th/pdf/v4i2t2a4.pdf · Created Date: 12/11/2012 3:36:32 PM
Page 4: journal.feu.ac.thjournal.feu.ac.th/pdf/v4i2t2a4.pdf · Created Date: 12/11/2012 3:36:32 PM
Page 5: journal.feu.ac.thjournal.feu.ac.th/pdf/v4i2t2a4.pdf · Created Date: 12/11/2012 3:36:32 PM
Page 6: journal.feu.ac.thjournal.feu.ac.th/pdf/v4i2t2a4.pdf · Created Date: 12/11/2012 3:36:32 PM
Page 7: journal.feu.ac.thjournal.feu.ac.th/pdf/v4i2t2a4.pdf · Created Date: 12/11/2012 3:36:32 PM
Page 8: journal.feu.ac.thjournal.feu.ac.th/pdf/v4i2t2a4.pdf · Created Date: 12/11/2012 3:36:32 PM
Page 9: journal.feu.ac.thjournal.feu.ac.th/pdf/v4i2t2a4.pdf · Created Date: 12/11/2012 3:36:32 PM