Columbia subject headings:
Architecture, Industrial--Italy--Iglesias--Congresses.
Landscape architecture--Italy--Iglesias--Congresses.
Mines and mineral resources--Italy--Iglesias--Congresses.
Harvard subject headings:
Architecture, Industrial--Italy--Iglesias--Congresses.
Landscape architecture--Italy--Iglesias--Congresses.
Mines and mineral resources--Italy--Iglesias--Congresses.
Princeton subject headings: