Leadbetter, Chris Computer studies and information technology: IGSCE and O level - 1st ed. - Cambridge Thomson/Wadsworth 2008 - 212 p. 25 cm. 004763 L 379 ISBN: 0521545404 Subjects--Topical Terms: Computers.ComputersInformation technology--Examinations--Study guides Dewey Class. No.: 004 / C738