Four colors suffice: how the map problem was solved/
Wilson, Robin J.
Four colors suffice: how the map problem was solved/ Four colours suffice Robin Wilson. - Princeton, N.J.: Princeton University Press, 2002. - xii, 262 p.: ill., maps, ports.; 21 cm.
First published 2002 by Penguin Group, London.
Includes bibliographical references and index.
0691115338
Mathematical recreations.
Four-color problem.
Four-color problem---History.
510.9 / W752f
Four colors suffice: how the map problem was solved/ Four colours suffice Robin Wilson. - Princeton, N.J.: Princeton University Press, 2002. - xii, 262 p.: ill., maps, ports.; 21 cm.
First published 2002 by Penguin Group, London.
Includes bibliographical references and index.
0691115338
Mathematical recreations.
Four-color problem.
Four-color problem---History.
510.9 / W752f