The Astronomy Puzzle Book
by Royal Observatory Greenwich,Dr. Gareth Moore
ISBN 13: 9781529322835
Format: Hardcover (272 pages) Publisher: Hodder & Stoughton Published: 28 Oct 2021
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Mensa Killer Sudoku: More than 200 of the most difficult number puzzles
by Moore, Dr. Gareth Dr. Gareth Moore, Mensa Ltd,
ISBN 13: 9781802791846
Format: paperback Publisher: Welbeck