Diwydiant: ffeil seneddol/Industry: parliamentary file Add to clipboard P1/43 File 1978-1979 Part of Papurau Gwynfor Evans/Gwynfor Evans Papers,
Diwydiant a gwaith/Industry and work Add to clipboard P1/45 File 1978-1979 Part of Papurau Gwynfor Evans/Gwynfor Evans Papers,
Diwydiant a busnesau bychain/Industry and small businesses Add to clipboard P1/44 File 1973-1976 Part of Papurau Gwynfor Evans/Gwynfor Evans Papers,