000 00385nam a2200157Ia 4500
020 _a9699134747
040 _cPK-LaCSN
082 _a510
_bSUN
100 _a"Thomas Wong Hock Sun"
245 0 _aChallenging Mathematics for O Level
260 _c2009
_bRedspot Publishing
_aLahore
300 _a352
942 _cTR
999 _c861709
_d861686