Columbia subject headings:
Harvard subject headings:
Germanic philology--Congresses.
Scientific literature--Germany--History--To 1500--Congresses.
Technical literature--Germany--History--To 1500--Congresses.
Princeton subject headings:
Germanic philology--Congresses.
Scientific literature--Germany--History--To 1500--Congresses.
Technical literature--Germany--History--To 1500--Congresses.