Johansen, R.  <br/><br/>
Teleconferencing and beyond : communications in the office of the future  (Book) 

 - New York  Data Communications, McGraw Hill  1984 
 - 185 p.  24 cm. 
<br/><br/><label>ISBN: </label>0076068730 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Teleconferencing
<br/><br/><label>Universal Decimal Class. No.: </label>621.39/651 JOH  / 9789