Columbia subject headings:
Marble industry and trade--Greece.
Marble industry and trade--Rome.
Marble sculpture, Classical.
Harvard subject headings:
Marble industry and trade--Greece--Congresses.
Marble industry and trade--Rome--Congresses.
Princeton subject headings:
Greece--Antiquities.
Marble industry and trade--Greece.
Marble industry and trade--Rome.
Marble sculpture, Classical.
Rome--Antiquities.