Dangos 6 canlyniad

Welsh Omnibus Survey

• A1/6
• Ffeil
• 1987-1989

Rhan oInstitute of Welsh Affairs Records,

Roads Study

• P/10
• Ffeil
• 1998-1999

Rhan oInstitute of Welsh Affairs Records,

Welsh transport

• W/29
• Ffeil
• 1973-1983

Rhan oRobin Reeves Papers

Swyddfa Gymreig: ffyrdd/the Welsh Office: roads

• P1/78
• Ffeil
• 1978-1979

Rhan oPapurau Gwynfor Evans/Gwynfor Evans Papers,

Great Britain. Welsh Office

Welsh Omnibus Survey

• R1/2
• Ffeil
• 1988

Rhan oInstitute of Welsh Affairs Records,

Wales 2010: Transport and Communications

• R3/12
• Ffeil
• 1993

Rhan oInstitute of Welsh Affairs Records,