Columbia subject headings:
Architecture--Spain--Gerona--Guidebooks.
Gerona (Spain)--Buildings, structures, etc.--Guidebooks.
Gerona (Spain)--Guidebooks.
Harvard subject headings:
Architecture--Spain--Gerona--Guidebooks.
Gerona (Spain)--Buildings, structures, etc.--Guidebooks.
Gerona (Spain)--Guidebooks.
Princeton subject headings: