00486nam a2200145Ia 4500 251029b |||||||| |||| 00| 0 eng d 511.5 Or66.FC Ore, Oystein 10714 The four-color problem / New York: Academic Press, 1968 xv, 259p. Index Pure and Applied Mathematics, v. 27 "Discusses the methods in graph theory that have been developed in the last century" ddc BK 0 0 0 511_500000000000000_OR66_FC 0 11043 ISI ISI 1998-09-07 0 511.5 Or66.FC DP13497 2019-02-14 00:00:00 BK 8934 8934