Columbia subject headings:
Architecture--Wales--Gwent.
Buildings--Wales--Gwent.
Harvard subject headings:
Architecture--Wales--Gwent.
Architecture--Wales--Monmouthshire.
Gwent (Wales)--Guidebooks.
Monmouthshire (Wales)--Guidebooks.
Princeton subject headings:
Architecture--Wales--Monmouthshire--Guidebooks.
Guidebooks.
Historic buildings--Wales--Monmouthshire--Guidebooks.