Thomas, Ronald R. <br/><br/>
Understanding telecommunications /  [Book]. 
Ronald R. Thomas.  
 - 1st ed. 
 - Blue Ridge Summit, PA :   TAB Books,   1989. 
 - xii, 243 p. :   ill. ;   24 cm. 
<br/><br/> "A Petrocelli book."  Includes index. 
<br/><br/>Bibliography: p. 229-230. 
<br/><br/><label>ISBN: </label>0830632298 (pbk.) 0830692290 
<br/><br/><label>LCCN: </label>88019940 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication.