9780764579943 | Pap/cdr edition (Wrox Pr Inc, April 29, 2005), cover price $36.95 | About this edition: Describes the basics of the Unix operating system, covering such topics as configuration options, programming, system security, network administration, and tools and commands.

9780764598081 | John Wiley & Sons Inc, April 29, 2005, cover price $34.99

9780072257038 | Osborne McGraw-Hill, March 30, 2005, cover price $39.99 | About this edition: Provides insights on maintaining security of computer networks, covering such topics as identity management systems, Web services, mobile devices, data encryption, and security patching.

9780072254976 | McGraw-Hill Osborne Media, July 30, 2004, cover price $43.95 | About this edition: An informative handbook for network administrators and professionals who use Linux offers practical guidelines on how to test, hack, and find security holes and secure them, explaining how to assess one's system, shut down unnecessary services and access, install filters and firewalls, eliminate unnecessary software, enhance authentication and user identity protocols, monitor network systems, and other important topics.

9780867308532 | Lebhar-Friedman Books, October 1, 2001, cover price $16.95 | About this edition: The food and drink critic for the St.

9780867308518 | Lebhar-Friedman Books, September 1, 2001, cover price $16.95 | About this edition: Packed with tempting tips and heart-fluttering advice, our guide to romance and seduction is sure to set your love life on fire.

9780871272065 | Princeton Book Co Pub, January 1, 1997, cover price $18.95 | About this edition: Modern dance concepts, terms, principles, and movements are defined in the words of the great founders of modern dance.