Tolhurst,M.R.(Editor) <br/><br/>
Open Systems Interconnetion. 

 -  Macmillan.  1988 
 - 224 P, 
<br/><br/> KOP KEDAI BUKU UM/NO,LO: 
<br/><br/><label>ISBN: </label>9780333468036 
<br/><br/><label>Dewey Class. No.: </label>001.64404 OPE