000 00330nam a2200145Ia 4500
020 _a0195774361
082 _bT-1013
_a510
100 _a"Saiyid, Ameena"
245 0 _aCountdown : a beginners book of math
260 _c1998
300 _a136
944 _cTB
999 _c277224
_d277224