Ryder,John D. <br/><br/>
Networks,lines and fields 

 - 2nd ed. 
 - New Delhi  Prentice-Hall of India  1955 
 - xi,593 p. 
<br/><br/><label>ISBN: </label>08769229910 
<br/><br/><label>Dewey Class. No.: </label>S/C-S/T D66,2 J5;6