000 00342nam a2200145Ia 4500
020 _a9780721431987
082 _b1919
_a510
100 _a"John Drinkwater","N/A"
245 0 _aExploring Mathematics
260 _bLadybird Books Ltd
_c1994
300 _a24
944 _cTR
999 _c531576
_d531576