000 00268nam a2200109Ia 4500
008 190719s9999 xx 000 0 und d
100 _aSatinder Bal Gupta
245 0 _aDiscrete Mathematics & Structures
260 _aN.D.
_bLaxmi
_c2006
650 _aMath
942 _cBK
999 _c12824
_d12824