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☆麦兜☆ » 网络课堂 » 有机课堂 » evans advanced organic chemistry challenging problems 800(edit)

19203137 发表于 2008-5-4 08:57

all probiem are difficult ,they are from cum exam.
but you can try !
[url]http://www.box.net/shared/jv8e6ns008[/url]

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