Columbia subject headings:
Harvard subject headings:
Historic buildings--Northern Ireland--Guidebooks.
Historic sites--Northern Ireland--Guidebooks.
National Trust (Great Britain)
Natural monuments--Northern Ireland--Guidebooks.
Northern Ireland--Guidebooks.
Princeton subject headings:
Guidebooks.
Historic buildings--Northern Ireland--Guidebooks.
Historic sites--Northern Ireland--Guidebooks.
National Trust (Great Britain)
Natural monuments--Northern Ireland--Guidebooks.
Northern Ireland--Guidebooks.