Keirstead, Phillip O. <br/><br/>
The world of telecommunication :  introduction to broadcasting, cable, and new technologies / 
Phillip O. Keirstead, Sonia-Kay Keirstead. 
 - Boston :  Focal Press,  1990 
 - 310 p. :  ill. 
<br/><br/> Includes index. 
<br/><br/>Bibliography: p. [297]-300. 
<br/><br/><label>ISBN: </label>0240800141 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Broadcasting--Vocational guidance.
<br/><br/><label>LC Class. No.: </label>HE8689.6  / K45 1990