Sip & Solvede Michael RiosMateriasLogic puzzlesSudokuMathematical recreationsEdiciones (1)Sip & Solve (2005)Sterling · inglés · ISBN 9781402735943Más obras de Michael RiosDDiálogosDiálogosCCommunity Development and Democratic PracticeCommunity Development and Democratic PracticeSudoku Puzzles for Clever Kids