Hunter;Jane <br/><br/>
Telecommunications Billing Systems 

 - NY  McGRAW Hill  2003 
 - 458 
<br/><br/><label>ISBN: </label>0-07-140857-6 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Engineering--Communication
<br/><br/><label>Dewey Class. No.: </label>658.1554  / HUN-T