Test Your IQ (Brain Gym)
by Nathan Haselbauer
ISBN 13: 9780715336205
Format: Paperback (224 pages) Publisher: David & Charles Published: 30 Oct 2009
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The Mammoth Book of New IQ Puzzles
ISBN 13: 9781849010047
Format: Paperback (512 pages) Publisher: Robinson Publishing Published: 25 Feb 2010
The Mammoth Book of Fast Puzzles
ISBN 13: 9781845298616
Format: Paperback (512 pages) Publisher: Robinson Published: 28 Aug 2008