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Chemistry |
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basic chemistry guide for high school students |
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collection of aids for high school students |
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Periodic table (elements properties) |
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http://chemedu.pu.edu.tw/organic/source-1.htm http://chemwww.pu.edu.tw/cheminfo/life/ENERGY.htm http://pokok.mysch.net/~chemistry/fussil_fuel.htm |
化石燃料及分餾 |
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Mathematics |
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數裡天地之 三角形的心 |
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