000 00340nam a2200145Ia 4500
020 _a043502809X
082 _bT-1157
_a510
100 _a"NA"
245 0 _aPrimary mathematics
260 _b,London : Heinemann Educational, 1985.
_c1985
300 _a77
944 _cTB
999 _c151600
_d151600