Farr, R.E  <br/><br/>
Telecommunications traffic,tariffs   an introduction to managers/ 
R.E. Farr. 
 - London :  Peter Peregrinus,  1988 
 - 206 p. ;  24 cm. 
 - IEE Telecommunications series 19. .
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0863411452 (pbk.)