Saaty Thomas L <br/><br/>
Four-color problem: assaults and conquest 

 - New York       McGraw Hill International        1977 
 - ix, 217p.  cm. 
<br/><br/> Appendix 175-193p. 
<br/><br/><label>Standard No.: </label>22580 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>B316-217, L7