Schatt, Stan Fox, steven <br/><br/>
Voice/data telecommunications for business 

 - Englewood Cliffs  Prentice Hall  1990 
 - viii,384p. 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Telecommunications
<br/><br/><label>Dewey Class. No.: </label>621.381  / S18V