Departmental advice note BA.
Great Britain.Highways and Traffic Directorate.
London : Department of Transport,
Description based on: 1/78; title from caption.
Latest issue consulted: 44/90.
Titles in later issues fluctuate between: Departmental advice note BA, and: Advice note BA.
Each issue also has a distinctive title.
Issued by: Department of Transport, Highways and Traffic.
Roads
Bridges
Advice note BA