Jones, William Richard.

• Addysg ddwyieithog yng Nghymru
• Bilingualism and intelligence
• Bilingualism and reading ability in English
• Englisch-deutsche geologisch-mineralogische Terminologie
• Minerals and mineral deposits
• Minerals in industry
• The educational attainment of bilingual children in relation to their intelligence and linguistic background
• The motets of Francesco Gasparini
• Tinfields of the world