New directions in the theory of graphs :  proceedings / 
Edited by Frank Harary. 
 - New York :  Academic Press,  1973. 
 - xii, 325 p. :  illus. ;  24 cm. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>ISBN: </label>012324255X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Graph theory--Congresses.