Shrader, Rabert L..  <br/><br/>
Electronic Communication /  
Shrader Rabert L.. 
 - 5 edition. 
 - New York :   McGraw-Hill,   1988. 
 - 62 s.:   il.;   24 cm. 
 - Biblioteka WASC .
 - Biblioteka WASC .
<br/><br/><label>ISBN: </label>0070571511