00431nam a22001337a 4500008004100000040005500041080002100096245007900117260004000196300001000236650001200246700001900258700002000277230428b        |||||||| |||| 00| 0 eng d  aNational Science LibrarycNational Science Library  a518.4(082.2)bK8  aTheory of graphs: b Proceedings of the colloquium held at tihany, Hungary  aNew York:  bAcademic Press, c1968  a370p.  aScience  aErdos, P (Ed.)  aKatona, G (Ed.)