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Social Physics club (Basic:O-Net) => Field force => ͤ: Webmaster™ ¹ 07, 2011, 01:11:02 AM



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Ǣ: Webmaster™ ¹ 07, 2011, 01:11:02 AM
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http://www.brr.ac.th/~brrweb/knowledge/physic-cyber/web_physics/BrainPop/Gravity/Gravity.swf

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