Columbia subject headings:
Marble industry and trade--Italy--Carrara.
Marble sculpture--Technique.
Martini, Arturo, 1889-1947--Correspondence.
Nicoli, Ruggero, 1898-1953--Correspondence.
Sculptors--Italy--Correspondence.
Harvard subject headings:
Marble industry and trade--Italy--Carrara.
Marble sculpture--Technique.
Martini, Arturo, 1889-1947--Correspondence.
Nicoli, Ruggero, 1898-1953--Correspondence.
Sculptors--Italy--Correspondence.
Princeton subject headings:
Martini, Arturo, 1889-1947--Correnspondance.
Nicoli, Ruggero, 1898-1953--Correnspondance.
Sculptors--Italy--Correnspondance.