000 00331nam a2200145Ia 4500
020 _a9789812718785
082 _b837
_a510
100 _a"Gopi Krishnan"
245 0 _aMathematics Standard 4
260 _bEPB
_aSingapure
_c1993
300 _a148
944 _cBK
999 _c494103
_d494103