Columbia subject headings:
Harvard subject headings:
Cadastres--Italy--Ravenna.
Chiesa di S. Maria in Porto fuori (Ravenna, Italy)
Church lands--Italy--Ravenna--History--To 1500--Sources.
Ravenna (Italy)--History--Sources.
Real property--Italy--Ravenna--History--To 1500--Sources.
Princeton subject headings:
Chiesa di S. Maria in Porto fuori (Ravenna, Italy)--History--Sources.
Church property--Italy--Ravenna--History--Sources.
Ravenna (Italy)--Church history--Sources.