Petersen, David,  1931- <br/><br/>
Audio, video, and data telecommunications / 
David Petersen. 
 - London ;  New York :  McGraw-Hill Book Co.,  c1992. 
 - xiii, 333 p. 
<br/><br/><label>ISBN: </label>0077074270 :  17.95 
<br/><br/><label>LCCN: </label>93014101     
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication.