Greenwood, Frank. <br/><br/>
Business telecommunications / 
Frank Greenwood, Mary M. Greenwood and Robert E. Harding 
 - Iowa :  Wm C.Broen,  1988 
 - 237 p :  illus 
<br/><br/><label>ISBN: </label>0697067742 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication.
<br/><br/><label>Dewey Class. No.: </label>384  / G795B