| Description | Catalog Cyflawn Gwasg Prifysgol Cymru 1971, gan gynnwys 'Llawlyfr Cernyweg Canol' a 'Llawlyfr Llydaweg Canol' gan Henry Lewis /
University of Wales Press Complete Catalogue 1971, including 'Llawlyfr Cernyweg Canol' and 'Llawlyfr Llydaweg Canol' by Henry Lewis |