Valkenburg, M.E.Van <br/><br/>
Netwok analysis : 
Valkenburg, M.E. Van 
 - 3rd 
 - New Delhi :  Prentice-Hill,  1974. 
 - xv,571p. 
<br/><br/><label>ISBN: </label>9788120301566 
<br/><br/><label>Standard No.: </label>88419 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>D661:4  L4