000 00300nam a2200121Ia 4500
008 220217s9999||||xx |||||||||||||| ||und||
082 _a511.5 CHA
100 _aD.S.C
245 0 _aGraph theory & Combinetrics
260 _aPrism book
_bNew Delhi
_c2007
300 _b285
650 _aMATHEMATICS
999 _c174656
_d174656