Dordick, Herbert S  <br/><br/>
Understanding modern telecommunications 

 - New York:    McGraw Hill Book Company,    1986 
 - 324p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science
<br/><br/><label>Universal Decimal Class. No.: </label>R 621.39:681.3  / M6