000 00302 a2200133 4500
082 _a510
_bNAR
090 _c19889
_d30655
100 _aNarayan, Shanti
245 _a Number systems
260 _aNew Delhi
_bS.Chand & Company Ltd
300 _aviii,128p.
_c22cm
650 _aMathematics
942 _cL
999 _c47577
_d47577