000 00283nam a2200121Ia 4500
008 230913s9999 xx 000 0 und d
100 _aGupta, M.K
245 0 _aDiscrete Mathematical Structure
260 _aMEERUT
260 _bKRISHANA
260 _c2010
650 _aMathematics
999 _c140572
_d140572