Van Valkenburg, M. E <br/><br/>
Network analysis (3rd ed.) 

 - New Jersey  FT Prentice-Hall  1974 
 - xv, 571p. : ill 
<br/><br/><label>ISBN: </label>0136110959 
<br/><br/><label>LC Class. No.: </label>TK 454.2 Van