000 00315nam a2200145Ia 4500
008 230913s9999 xx 000 0 und d
082 _a519.4 dis
100 _aSingh, S.B.
245 0 _aDiscrete Structures
260 _aDELHI
260 _bKHANNA
260 _c2007
300 _a335
650 _aMathematics
999 _c140210
_d140210