000 00336nam a2200145Ia 4500
008 130410s9999 xx 000 0 und d
100 _aSINGHAL & GUPTA
245 _aAPPROACH TO NUMBERS
250 _a
260 _bR.CHAND & COMPANY PVT LTD
_a
_c1969
270 _aDELHI
300 _a
650 _aMATHEMATICS
_b
942 _2ddc
_cBK
999 _c5856
_d5856