Acknowledgements This report was restructured went well, thanks to the teachers Ms.Piyaporn Burmese teachers with the knowledge and guidance. Review and correct the defects. With attention to every step The report is the most complete and thank Director satreesiriket school to promote and develop the resources of the school is conducive to research , thank a teacher satreesirket school is trained to give advice in the preparation of this report. do not mention my name , thank Consortium. Behind the success To provide assistance and encouragement throughout.
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