000 00338nam a2200145Ia 4500
020 _a9780721428246
082 _bT-486
_a510
100 _a"Norman D Lock"
245 0 _aEssential Number Skills
260 _bLadybird Books
_aLondon
_c0
300 _a24
944 _cTB
999 _c113730
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