Columbia subject headings:
Harvard subject headings:
Antiquities--Collection and preservation--Congresses
Cultural property--Protection--Congresses
Plaster casts--Collectors and collecting--Congresses.
Plaster casts--History--Congresses.
Sculpture, Ancient--Conservation and restoration--Congresses.
Princeton subject headings:
Antiquities--Collection and preservation--Congresses.
Cultural property--Protection--Congresses.
Plaster casts--Collectors and collecting--Congresses.
Plaster casts--Conservation and restoration--Congresses.
Plaster casts--History--Congresses.
Sculpture, Ancient--Conservation and restoration--Congresses.
Sculpture--Conservation and restoration--Congresses.