A report from the research done in this freely provided courtesy of many people. That cannot be said to be a patron, which all first student flat, he is Ms.JanJuree Boonsomsri grace to desire, teachers have the knowledge, advice and fixes a bug with attention to every step, report writing, research these independently. Thanks to Ms Keanchandr and Ms Janjamduang. Tananya. Sangsawang to help in the tracing data, exchange knowledge, ideas and encouragement to research. Thank you for my family behind in success to help support and encouragement.
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