000 00290nam a22001337a 4500
999 _c1101
_d1101
020 _a9788120338807
082 _a511.1
100 _aPurna Chandra Biswal
245 _aDiscrete Mathematics & Graph Theory
250 _a2nd
260 _aNew Delhi
_bPHI
_c2009
300 _a490
942 _cBK