00615nam a2200181 a 4500 20231107123410.0 090331s19uu xx 00 eng d HSLRC HSLRC HSLRC Computer security Alexandria, VA, c1986. 128 pages. : colored. illustrations. Understanding computers 42800 Includes glossary, appendix, bibliography, and index. Computers Access control 42801 Time-Life Books. 42802 lcc BK 55607 55607 0 4 lcc 0 0 HSLRC HSLRC CIR 2019-12-18 QA 76.9 A25 C635 1986 HS1103 2019-12-18 00:00:00 1 2019-12-18 BK