Saaty, Thomas L. <br/><br/>
The four-color problem :  assaults and conquest / 
Thomas L. Saaty and Paul C. Kainen. 
 - New York :  McGraw-Hill International Book Co.,  c1977. 
 - ix,217p. :  ill. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/>Bibliography (p. 197-211). 
<br/><br/>
<br/><br/><br/>english 
<br/><br/><label>ISBN: </label>0070543828  $23.00 
<br/><br/><label>LCCN: </label>77030088  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Four-color problem.
<br/><br/><label>LC Class. No.: </label>QA612.19  / .S2 
<br/><br/><label>Dewey Class. No.: </label>511.5/SAF