Dewi Williams

Big Book of 12 × 12 Giant Sudo

Big Book of 12 × 12 Giant Sudoku

2015

Big Book of 16 × 16 Giant Sudo

Big Book of 16 × 16 Giant Sudoku

2015

AS-Level Mathematics Revision

AS-Level Mathematics Revision Guide (AQA C1)

2014

Helyntion Iwerddon

Helyntion Iwerddon

1988