Columbia subject headings:
Duby, Georges--Archives--Congresses.
Historians--France--Archives--Congresses.
Medievalists--France--Archives--Congresses.
Harvard subject headings:
Duby, Georges--Archives.
Historians--France--Archives.
Medievalists--France--Archives.
Princeton subject headings:
Duby, Georges--Archives--Congresses.
Historians--France--Archives--Congresses.
Medievalists--France--Archives--Congresses.