Electronic communications  a step-by-step introduction 
Heathkit/Zenith Educational Systems 
 - Englewood Cliffs, NJ  Prentice Hall  c1983 
 - 249p. ;  ill. :  24cm 
<br/><br/> Reproduces the text of the ed. published: Benton Harbor, Mich. : Heath Co., c1981; unit objectives and self-reviews omitted  Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Radio
<br/><br/><label>Dewey Class. No.: </label>621.3841