Northern Ireland /
Ordnance Survey of Northern Ireland.
[London] : Published by D Survey, Ministry of Defence,
1970.
"Reproduced by permission of Ordnance Survey of Northern Ireland."
Panel title.
Title at top margin: Northern Ireland road map.
"Ireland sheet 1."
Includes index map to Ordnance Survey maps of Ireland at 1:250,000.
Includes Irish grid.
Relief shown by contours, gradient tints, and spot heights. Depths shown by contours.
Roads