Pritchard, J A T <br/><br/>
Security in on-line systems 

 - Oxford:   The National Computing Centre Ltd,   1979 
 - 187p. 
<br/><br/><label>ISBN: </label>0-85012-211-2 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Security
<br/><br/><label>Subjects--Index Terms: </label>Terminal security 
<br/><br/><label>Universal Decimal Class. No.: </label>D 681.3.01.004.4  / L9