Gwelliant Dolwyddelan i Bont-yr-Afanc : cefnffordd A470 Caerdydd i Lan Conwy = Dolwyddelan to Pont-yr-Afanc improvement : A470 Cardiff to Glan Conwy trunk road.
Wales.Welsh Assembly Government.
Cardiff : Welsh Assembly Government,
2005.
Teitl clawr = Cover title.
Roads
Road construction industry