Columbia subject headings:
Architecture, Medieval--Italy--Tuscany--Guidebooks.
Church architecture--Italy--Tuscany--Guidebooks.
Church buildings--Italy--Tuscany--Guidebooks.
Harvard subject headings:
Architecture, Medieval--Italy--Tuscany--Guidebooks.
Church architecture--Italy--Tuscany--Guidebooks.
Church buildings--Italy--Tuscany--Guidebooks.
Princeton subject headings: