Gehris, Dennis O. <br/><br/>
Communication technologies / 
Dennis O. Gehris, Linda F. Szul 
 - Upper Saddle River, N.J. :  Prentice Hall,  c2002 
 - 267 p. :  ill. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0130400246 
<br/><br/><label>Subjects--Topical Terms: </label><br/>TELECOMMUNICATION<br/>INFORMATION TECHNOLOGY
<br/><br/><label>LC Class. No.: </label>TK5101  / G437C