000 00265nam a2200121Ia 4500
082 _a510
_bJOH
100 _aJohnsonbaugh,Richard
245 _aDiscrete mathematics
250 _a6th Ed.
260 _bPearson
_aN.Delhi
_c2009
300 _a688p.
942 _2ddc
_cBK
_012
999 _c5143
_d5143