000 00307nam a2200121Ia 4500
008 130409s9999 xx 000 0 und d
100 _aBRAMHA NAND AND TYAGI
245 _aSET THEORY AND NUMBER SYSTEM
260 _bRAJ HANS PUB. MEERUT
_c1989
300 _a248
650 _aMATHS
_bB.SC.
942 _2ddc
_cBK
999 _c14872
_d14872