Columbia subject headings:
Building stones--Deterioration--Congresses.
Cities and towns--Conservation and restoration--Mediterranean Region--Congresses.
Monuments--Conservation and restoration--Mediterranean Region--Congresses.
Stone buildings--Conservation and restoration--Mediterranean Region--Congresses.
Weathering of buildings--Mediterranean Region--Congresses.
Harvard subject headings:
Architecture--Conservation and restoration--Mediterranean Region--Congresses.
Cities and towns--Conservation and restoration--Mediterranean Region--Congresses.
Historic buildings--Conservation and restoration--Mediterranean Region--Congresses.
Mediterranean Region--Antiquities--Congresses.
Monuments--Conservation and restoration--Mediterranean Region--Congresses.
Monuments--Mediterranean Region--Conservation and restoration--Congresses.
Stone buildings--Conservation and restoration--Mediterranean Region--Congresses.
Weathering of buildings--Mediterranean Region--Congresses.
Princeton subject headings:
Building stones--Deterioration--Congresses.
Cities and towns--Conservation and restoration--Mediterranean Region--Congresses.
Monuments--Conservation and restoration--Mediterranean Region--Congresses.
Stone buildings--Mediterranean Region--Conservation and restoration--Congresses.
Stone--Deterioration--Congresses.
Stone--Preservation--Congresses.
Weathering of buildings--Mediterranean Region--Congresses.