47794805
9781544796987
Sudoku Puzzle Books is the author of 'Sudoku Puzzle Book, 1,000 EXTRA HARD Puzzles: Bargain Sized Jumbo Book, No Wasted Puzzles With Only One Level (Sudoku Puzzle Books Series 2) (Volume 35)', published 2017 under ISBN 9781544796987 and ISBN 1544796986.
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