00455pamaa2200157 4500 0000014943 20080725090000.0 1886801568 005.8 VAC TK5105.59 VAC 1997 VACCA Intranet security John R. Vacca. Massachusetts: Charles River Media, 1997. xxxix, 506p.: 24cm. Includes 1 CD-ROM runs on Windows 3.X or higher Intranets (Computer networks)