Wells R <br/><br/>
Messages men and miles: electronic communications how they work 

 -  1958 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>40508 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electronics
<br/><br/><label>Dewey Class. No.: </label>D65:4, J8