At head of title: Union académique internationale.
Maps and plans in pocket attached to inside back cover.
Tabula imperii Romani. Britannia septentrionalis : based on GSGS 4646 at 1:1,000,000 : covering sheets N.30 and O.30, with parts of sheets N.29, N.31 and O.29, of the international 1:1,000,000 map of . ISBN 0197260594. Published by Oxford University Press in 1987. Publication and catalogue information, links to buy online and reader comments.