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