Bryce James y <br/><br/>
Using ISDN second edition 
Bryce James y 
 - New Delhi  Prcntice Hall of India     1996 
 - 674p.  cm. 
<br/><br/><label>Standard No.: </label>93594 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>D65,48, N6