000 00308nam a2200133Ia 4500
008 210901s1968 xx 000 0 eng d
082 _a512.7 SIN
100 _aSingal, M.K
245 3 _aAn approach to numbers
260 _aDelhi
_bR.Chand
_c1968
300 _a220
650 _aMathematics
942 _2ddc
_cBK
999 _c5654
_d5654