Communications source books / 
editor Sybil P. Parker 
 - New York :  McGraw-Hill,  1987 
 - 359 p. :  ill. ;  26 cm. 
<br/><br/><label>ISBN: </label>0070455104 
<br/><br/><label>LCCN: </label>88-013014 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication