Shelly, Gary B. Discovering computers 2006 : a gateway to information, web enhsnced-complete / Gary B. Shelly, Thomas J. Cashman, Misty E. Vermaat - Boston, MA ; Course Technology, 2005 - 823, 18, 54 p. : ill. (some col.) ; 28 cm. ISBN: 0619255463 Subjects--Topical Terms: ComputersComputer scienceComputer networks