FITZGERALD, J. : <br/><br/>
Business data communications : Basic concepts, Security and Design 

 - 3rd ed. 
 -  New York : John Wiley  1990 
 - 628 p. 
<br/><br/><label>ISBN: </label>0000471508772 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Data Communication : Computer Networks 
<br/><br/><label>Dewey Class. No.: </label>004.6  / F37