Columbia subject headings:
Architecture, Romanesque--Italy--Elsa River Valley.
Church architecture--Italy--Elsa River Valley.
Church buildings--Italy--Elsa River Valley.
Harvard subject headings:
Architecture, Romanesque--Elsa Valley.
Church architecture--Elsa Valley.
Church buildings--Elsa Valley.
Church buildings--Italy--Elsa River Valley.
Princeton subject headings:
Architecture, Romanesque--Elsa Valley.
Church architecture--Elsa Valley.
Church buildings--Elsa Valley.