000 00382nam a2200145Ia 4500
001 12812
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110 _aOpen University Course Team
245 _aNumbers and counting. Unit 1 by Graham Flegg /
260 _bOpen uty press ,
_c1974.
300 _a24 p.
_c29.5cms
653 _aMathematics
653 _aNumber Theory
942 _cGEN
999 _c95062
_d95062