Halsall, Fred. <br/><br/>
Data communications computer networks and OSI /  

 - 2nd edn /  
 - Massachusetts :     ,   1991 
 - 549p :  
<br/><br/><label>ISBN: </label>0-201-18244-0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer
<br/><br/><label>Dewey Class. No.: </label>BV  / M8