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  1977 
 - ix, 217 p ill 25 cm 
<br/><br/> Includes index 
<br/><br/>Bibliography: p. 197-211 
<br/><br/><label>ISBN: </label>0070543828  23.00 
<br/><br/><label>LCCN: </label>77-30088 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Four--color problem