Dr. Francis Pf Lai

titleISBN-13
(ISBN-10)
year of publication
Sudoku: Explaining the Fifteen Steps of the Francis' Rules for Sudoku978-1-412O-8O23-1
(1-412O-8O23-1)
2006

D.F. · D. Francis · D. P. · Dr.P · F. Lai · Francis L.

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