Saaty, Thomas L. <br/><br/>
The four-color problem:  assaults and conquest/ 
Thomas L. Saaty and Paul C. Kainen. 
 - New York:  Dover,  1986. 
 - vi, 217 p.:  ill.;  21 cm. 
<br/><br/> Includes index. 
<br/><br/>Bibliography: p. 197-211. 
<br/><br/><label>ISBN: </label>0486650928 (pbk.) :  $6.00 
<br/><br/><label>LCCN: </label>85029302 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Four-color problem.
<br/><br/><label>Dewey Class. No.: </label>511/.5