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

 - Manchester  NCC Publications  1979 
 - 2-187p ill 22cm Pbk 
<br/><br/>Bibl.: p.165-170. - Index 
<br/><br/><label>ISBN: </label>0850122112 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electronic data processing departments--Security measures<br/>On--line data processing