OK: Student's Book Level 1 (Oxford Intensive English Courses)
by Clive Oxenden, David Bolton, Len Peterson, Len Petersen
ISBN 13: 9780194323536
Format: Paperback (88 pages) Publisher: Oxford University Press Published: 02 Feb 1989
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OK: Level 3 (Oxford Intensive English Courses)
by Clive Oxenden, David Bolton, Len Petersen
ISBN 13: 9780194323611
Format: Paperback (88 pages) Publisher: Oxford University Press Published: 11 May 1989 Other Format: Paperback
OK: Tchrs' Level 2 (Oxford Intensive English Courses)
by David Bolton, Mary Bowen, Clive Oxenden, Len Petersen
ISBN 13: 9780194323598
Format: Paperback (209 pages) Publisher: Oxford University Press Published: 25 May 1989
OK: Level 2 (Oxford Intensive English Courses)
ISBN 13: 9780194323574
Format: Paperback (88 pages) Publisher: Oxford University Press Published: 30 Mar 1989 Other Format: Paperback