Farr, R. E. <br/><br/>
Telecommunications traffic, tariffs and costs :  an introduction for managers / 
R. E. Farr. 
 - London :  Peter Peregrinus Ltd on behalf of the Institution of Electrical Engineers,  c1988. 
 - 206 p. 
 - IEE telecommunications series,  19  0263-5852 ; .
 - Institution of Electrical Engineers telecommunications series,  19  0263-5852 ; Telecommunications series,  19  0263-5852 ; .
<br/><br/><label>ISBN: </label>0863411452 (cased) 
<br/><br/><label>LCCN: </label>90053112