00980nam a2200289 i 4500LE0130415620020507175642.0981130s1977 us ||| | eng 0070543828Dip.to Matematicaeng511.5AMS 05CSaaty, Thomas L.14108The four-color problem :assaults and conquest /Thomas L. Saaty and Paul C. KainenNew York :McGraw-Hill International,c1977ix, 217 p. :ill. ;25 cm.Includes index.Bibliography: p. 197-211Four-color problemGraph theoryKainen, Paul C..b1077422121-09-0628-06-02b1077422LE013 05C SAA11 (1977)12013000104751le013-E0,00-l-01010.i1087299128-06-02Four-color problem340522UNISALENTOle01301-01-98ma-engus 41