00458nam a2200121   4500020002400000082001500024100001800039245001700057260004500074300003200119500004700151650013800198  a9788185015552 (pbk)  a512.5bHAR  aHarary, Frank  aGraph theory  aNew DelhibNarosa Publishing Housec1969  axi, 286 pb: ill.c; 21 cm.  aIncludes appendix, bibliography and index.  aGrapy theoryaMathematicsvMatricesvTrees (Graph theory)vGroup theoryvGeometry, EnumerativevFactorizationvAlgebraic systemvFBSH