Gwelliant i'r A483 wrth droadau Esgairdraenllwyn : datganiad amgylcheddol crynodeb annhechnegol = A483 improvement at Esgairdraenllwyn Bends : environmental statement non-technical summary.
Wales.Transport Directorate.
Wales.Welsh Assembly Government.
Parsons Brinckerhoff.
WynThomasGordonLewis.
Cardiff : Welsh Assembly Government Transport Directorate,
2003.
Cover title.
Includes bibliographical references.