The four-color problem; assaults and conquest
Saaty, Thomas L. and Kainen, Paul C.
The four-color problem; assaults and conquest - 2nd. - New York Dover 1986 - vi, 217p. Index, Bibl.
511.5 / Sa112.FC
The four-color problem; assaults and conquest - 2nd. - New York Dover 1986 - vi, 217p. Index, Bibl.
511.5 / Sa112.FC
