Bernt,Phyllis W <br/><br/>
International telecommunications 

 - Indiana  Sams  1993 
 - 444p. 
 - Proffessional reference series .
<br/><br/><label>ISBN: </label>0672301199 
<br/><br/><label>Subjects--Index Terms: </label>telecommunication 
<br/><br/><label>Dewey Class. No.: </label>621.39  / BER