White, Curt M. Data communications and computer networks : a business user's approach / Curt M. White - 5th ed. - Boston, MA : Course Technology/Cengage Learning, c2009 - xxvi, 506 p. : ill. ; 29 cm. Includes index ISBN: 9780324593853 (ISE) 0324593856 (ISE) 9781423903031 142390303X Subjects--Topical Terms: Computer networksOSI (Computer network standard)Data transmission systems