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09 ÊÔ§ËÒ¤Á 2008, 21:30
http://www.niets.or.th/pdf/mathp6_50.pdf
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09 ÊÔ§ËÒ¤Á 2008, 22:05
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14 ÊÔ§ËÒ¤Á 2008, 22:03
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8.1
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14.4
15.1
16.2
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22.2
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15 ÊÔ§ËÒ¤Á 2008, 07:53
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15 ÊÔ§ËÒ¤Á 2008, 09:00
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15 ÊÔ§ËÒ¤Á 2008, 14:24
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