Carr, Joseph J <br/><br/>
Elements of electronic communications 

 - U S A  Reston publishing  1978 
 - 486p. 
<br/><br/><label>ISBN: </label>0879092068 
<br/><br/><label>Subjects--Index Terms: </label>Telecommunication  Electronics 
<br/><br/><label>Universal Decimal Class. No.: </label>621.39  / CAR