00332nam a2200109Ia 4500008004100000082001900041100001900060245002900079260003500108300002700143440005200170251028b        |||||||| |||| 00| 0 eng d  a511.5bB692.EG  aBollobas, Bela  aExtremal graph theoryb/  aLondon:bAcademic Press,c1978  axx, 488p. Index, Bibl.  aLondon Mathematical society monographs ; no. 11