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- Language: English
- Year: 2002

- Author: P. H Callum Katherine J. Lewis
- Language: English
- Year: 2004

- Author: Glyn Davies
- Language: English
- Year: 2003

- Author: John Slatter
- Language: English
- Year: 2000

- Author: John Slatter
- Language: English
- Year: 2000

- Author: Emyr Humphreys
- Language: English
- Year: 2001

- Author: Meic Stephens
- Language: English
- Year: 2003

- Author: Robert Pope
- Language: English
- Year: 2005

- Author: Mari A. Williams Gwenfair Parry
- Language: English
- Year: 1999