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ปีที่ ๕๒ ฉบับที่ ๕ ก.ย.-ต.ค.๒๕๕๒ SILPAKORN JOURNAL Vol. 52 No. 5 September - October 2009 ISSN 0125 - 0531 Page 67To view this content in Flash, you must have version 8 or greater and Javascript must be enabled. To download the last Flash player
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