Columbia subject headings:
Historiography.
Saxony-Anhalt (Germany)--History.
Harvard subject headings:
History--Research--Germany--Saxony-Anhalt--Congresses.
Saxony-Anhalt (Germany)--History--Congresses.
Princeton subject headings:
History--Research--Germany--Saxony-Anhalt--Congresses.
Saxony-Anhalt (Germany)--Historiography--Congresses.