Killer Sudoku: 200 Puzzles
by Gareth Moore
ISBN 13: 9781480194205
Format: Paperback (62 pages) Publisher: CreateSpace Independent Publishing Platform Published: 27 Oct 2012
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Mental Maths Games for Clever Kids®
by Moore, Gareth Gareth Moore, Chris Dickason,
ISBN 13: 9781780556208
Format: paperback Publisher: Buster Books