2007-02-26 ■ diary これは買わないと! Chemistry Su Doku: Volume 1 http://www.amazon.co.uk/exec/obidos/ASIN/0854046933/qid=1133199231/sr=8-1/ref=sr_8_xs_ap_i1_xgl?tag2=notinthecurre-21 http://www.purpletube.com/?p=157