CCalcudoku 9x9 PuzzlesCalcudoku 9x9 Puzzlesde Kevin VagnerEdiciones (1)Calcudoku 9x9 Puzzles (2017)Independently Published · inglés · ISBN 9781976714641Más obras de Kevin VagnerCalcuDoku Hard: Hard Logic Puzzles Collection (Hard Puzzles For Adults)MMath Games : KindergartenMath Games : KindergartenMath Games 7th Grade