Carlson A Burce <br/><br/>
Communcation systems. 

 - 2 
 -  1975 
<br/><br/><label>Standard No.: </label>87151 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>D65,4, L5