000 00326nam a2200109 a 4500
005 20140414093834.0
008 030610s19uu xx 00 eng d
050 _aCD 540
_bOR #3
245 _aSuper tutor Chemistry plus :
_bclear explanations , comprehensive tutorials, challenging quizzeas.
942 _cAVM
999 _c108945
_d108945