Columbia subject headings:
English language--Dialects--Great Britain.
English language--Dialects--Ireland.
English language--Maps.
Linguistic geography.
Maps.
Harvard subject headings:
English language--Dialects--British Isles.
English language--Dialects--Great Britain
English language--Dialects--Ireland.
English language--Maps
Great Britain--Languages.
Ireland--Languages.
Linguistic geography.
Princeton subject headings:
English language--Dialects--Great Britain.
English language--Dialects--Ireland.
English language--Maps.
Linguistic geography.
Maps.