Electronic communication 
Shrader, Robert L. 
 - Fourth edition. 
 -  McGraw-Hill Book Company.  1980 
 - xiv, 801 pages. 
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<br/><br/><label>Subjects--Topical Terms: </label><br/>Electronics.
<br/><br/><label>Dewey Class. No.: </label>621.38 Sh8 1980