TY  - BOOK
TI  - Computer security
T2  - Understanding computers
SN  - 0809456710
U1  - 621.38195 
PY  - 1986///
CY  - Virginia
PB  - Time-Life Books
KW  - Computers
KW  - Access control
N1  - Includes index; Bibliography: p.122-124
ER  -