Roberts, Ralph <br/><br/>
Computer security / 
Ralph Roberts & Pamela Kane 
 - United States :  Compute! Books,  1989. 
 - vii, 170 pages ;  23 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>0874551889 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Communication and network security<br/>Physical security