Yarberry, William A. <br/><br/>
Computer telephoney integration / 
Yarberry, William A. 
 - London:  CRC press,  1999. 
 - ix,296p;25cm 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0849399955 
<br/><br/><label>Dewey Class. No.: </label>621.385 YAR