Books listed by ISBN
Riddler Books
R. B
title
ISBN-13
(ISBN-10)
year of publication
Sudoku Puzzles Quenching Sudoku
978-1-002-00313-8
(1-002-00313-X)
2019
The Best Ever Book of Sudoku Puzzles for Greta
978-1-002-04300-4
(1-002-04300-X)
2019
Ridge Burns