Panko Raymond R Ed. <br/><br/>
Business data networks and telecommunications 

 - 4 
 -  2003 
<br/><br/><label>Standard No.: </label>9109 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>D6,8(B),4, P3