Electronic communication 
Shrader, Robert L. 
 -  Macmillan/McGaw-Hill.  1993 
 - 713 pages. 
<br/><br/>
<br/><br/><label>ISBN: </label>9-71085580-8 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electronics.
<br/><br/><label>Dewey Class. No.: </label>621.3 Sh5e 1993