Tremendously Tricky IQ Puzzles
by Colleen Collier, Nicki Mellows, Gary Sherwood
ISBN 13: 9781904797463
Format: Hardcover (80 pages) Publisher: Lagoon Books Published: Feb 2005
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Devastatingly Difficult IQ Puzzles
by Heather Dickson, Nicki Mellows, Gary Sherwood
ISBN 13: 9781904797456