HARTSFIELD, Nora <br/><br/>
Pearls in graph theory   a comprehensive introduction 
Nora HARTSFIELD 
 - Boston  Academic Press  1990 
 - ix, 246p 
<br/><br/><label>ISBN: </label>0123285526 
<br/><br/><label>Dewey Class. No.: </label>511.5 H257P