000 00284nam a2200121Ia 4500
008 220601s2003 xx 000 0 eng d
100 _aSINGH,S.B.
245 0 _aDISCRETE STRUCTURES
250 _a1st Ed.
260 _c2003
_aNew Delhi
_bKHANNA PUB
300 _a558
942 _2ddc
_cBTECH
999 _c1989
_d1989