000 00344nam a2200157Ia 4500
100 _aSingh, S B
080 _a511.6
526 _dTB
526 _aPG
366 _f#REF!
942 _cBK
245 _aCombinatorics and graph theory 3rd ed.
260 _aKhanna book publishing co.(p) ltd.
_bNew Delhi
_c2018
300 _a463
546 _aE
999 _c57538
_d57538