Columbia subject headings:
Piazza Armerina (Italy)--Antiquities, Roman.
Piazza Armerina (Italy)--Buildings, structures, etc.--Congresses.
Roman Villa of Casale (Piazza Armerina, Italy)--Congresses.
Harvard subject headings:
Roman Villa of Casale (Piazza Armerina, Italy)--Congresses.
Princeton subject headings:
Piazza Armerina (Italy)--Antiquities, Roman.
Piazza Armerina (Italy)--Buildings, structures, etc.--Congresses.
Roman Villa of Casale (Piazza Armerina, Italy)--Congresses.