Columbia subject headings:
Church architecture--Italy--Palermo--Guidebooks.
Church buildings--Italy--Palermo--Guidebooks.
Palermo (Italy)--Buildings, structures, etc.--Guidebooks.
Harvard subject headings:
Architecture, Modern--17th century--Italy--Palermo.
Architecture, Modern--18th century--Italy--Palermo.
Architecture--Italy--Palermo--History.
Church architecture--Italy--Palermo--Guidebooks.
Church buildings--Italy--Palermo--Guidebooks.
Palermo (Italy)--Buildings, structures, etc.--Guidebooks.
Princeton subject headings: