Shay, William A <br/><br/>
Understanding data communications and networks 

 - 2nd ed. 
 - Bonn:   Cole Publishing Company,   1999 
 - xx, 711p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Information technology
<br/><br/><label>Universal Decimal Class. No.: </label>D 681.324  / N8