Amirul Zaidi Permainan SUDOKU : TAHAP SUKAR : "DIFFICULT LEVEL." BUKU 4 / Amirul Zaidi - x, 65 pages : 23 cm ISBN: 983197487-5 Subjects--Topical Terms: SudokuLogic puzzlesMathematical recreations Dewey Class. No.: 793.74 / AMI