Truxal, John G. <br/><br/>
The age of electronic messages / 
John G. Truxal. 
 - New York :  McGraw Hill,  c1990. 
 - xi, 487 p. : ill. ; 23 cm. 
 - New liberal arts series .
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0070653194 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication.<br/>Electronics.