000 00322nam a2200145Ia 4500
020 _a9789810159757
082 _b230
_a510
100 _a"YEAP BAN HAR"
245 0 _aMATHS
260 _bTIME MEDIA LTD
_aSINGAPORE
_c2005
300 _a32
944 _cR
999 _c609978
_d609978