000 00334nam a2200145Ia 4500
020 _a9812084304
082 _b605
_a500
100 _a"Hoong Tho Lai"
245 0 _ascience practical 1B
260 _b,Pan pacific
_asingapore
_c1998
300 _a64
944 _cBK
999 _c256890
_d256890