000 00336nam a22001337a 4500
999 _c25096
_d25096
008 180809b ||||| |||| 00| 0 eng d
020 _a9788126527908
082 _a511 SIN-D
100 _aSingh,Y N
245 _aDiscrete Mathematical Structures
_cY N Singh
260 _aNew Delhi
_bWiley
_c2011
942 _cBK