OCR Computing for A Level
by Chris Leadbetter,George Rouse,Agneau Belanyek
ISBN 13: 9780340967898
Format: Paperback (216 pages) Publisher: Hodder Education Published: 31 Oct 2008
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Computer Studies and Information Technology: IGCSE and O Level (Cambridge International IGCSE)
by Chris Leadbetter, Stewart Wainwright
ISBN 13: 9780521545402
Format: Paperback (212 pages) Publisher: Cambridge University Press Published: 15 Jul 2004
Cambridge International AS and A Level Computing Coursebook (Cambridge International Examinations)
by Chris Leadbetter, Roger Blackford, Tony Piper
ISBN 13: 9780521186629
Format: Paperback (424 pages) Publisher: Cambridge University Press Published: 01 Mar 2012