Engebretson, David J. Technician's guide to physical security networking : enterprise solutions / by David Engebretson. - Bloomington, IN : Author House, 2008. - xii, 251 p. : ill. ; 12 cm. ISBN: 9781434399915(pbk) : SR125.00 Subjects--Topical Terms: Computer security.Telecommunication systems.Computer networks--Security measures. Dewey Class. No.: 005.8 / En32 2008