Hartsfield, Nora. <br/><br/>
Pearls in graph theory:  a comprehensive introduction/ 
Nora Hartsfield, Gerhard Ringel. 
 - Boston:  Academic Press,  c1990. 
 - ix, 246 p.:  ill.;  24 cm. 
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0123285526 (alk. paper) 
<br/><br/><label>LCCN: </label>90036165 
<br/><br/><label>Nat. Bib. No.: </label>GB91-52547 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Graph theory.
<br/><br/><label>Dewey Class. No.: </label>511.5  / H335p