Columbia subject headings:
Harvard subject headings:
Carthusians--Europe--History--Congresses.
Carthusians--History--Congresses.
Charterhouses--Congresses.
Charterhouses--Europe--History--Congresses.
Christian antiquities--Congresses.
Christian antiquities--Europe--Congresses.
Excavations (Archaeology)--Congresses
Princeton subject headings:
Carthusians--Europe--History--Congresses.
Carthusians--History--Congresses.
Charterhouses--Europe--History--Congresses.
Christian antiquities--Europe--Congresses.