Columbia subject headings:
Architecture--Italy--Marche.
Church buildings--Italy--Marche.
Religious architecture--Italy--Marche.
Harvard subject headings:
Architecture--Italy--Marche.
Church buildings--Italy--Marche.
Religious architecture--Italy--Marche.
Princeton subject headings:
Architecture--Italy--Marche.
Church buildings--Italy--Marche.
Religious architecture--Italy--Marche.