Pritchard, J. A. T., <br/><br/>
Computer security :  facts and figures / 
J. A. T. Pritchard 
 - Manchester :  N.C.C. Publications,  1979 
 - 50 p. :  ill. ;  29 cm. 
<br/><br/><label>ISBN: </label>0850122244 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electronic data processing departments--Security measures