Kennedy, George <br/><br/>
Electronic communication systems / 
George Kennedy, Bernard Davis. 
 - 4th ed 
 - Manila :  National Bookstore,  c1993. 
 - xv, 763 p. : ill. 
<br/><br/> Includes appendix and index. 
<br/><br/><label>ISBN: </label>97108-5618-9 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication