Columbia subject headings:
Harvard subject headings:
Feudalism--Germany--Hesse--History--13th century--Sources--Congresses.
Feudalism--Germany--Hesse--History--13th century--Sources.
Henry I, Landgrave of Hesse, 1244-1308--Congresses.
Hesse (Germany)--History--1247-1567--Sources--Congresses.
Hesse (Germany)--History--1247-1567--Sources.
Sophie, Duchess of Brabant, 1224-1284--Congresses.
Werner, von Eppstein, 1225-1284--Congresses.
Princeton subject headings:
Feudalism--Germany--Hesse--History--13th century--Sources--Congresses.
Feudalism--Germany--Hesse--History--13th century--Sources.
Henry I, Landgrave of Hesse, 1244-1308--Congresses.
Hesse (Germany)--History--1247-1567--Sources--Congresses.
Hesse (Germany)--History--1247-1567--Sources.
Sophie, Duchess of Brabant, 1224-1284--Congresses.
Werner, von Eppstein, 1225-1284--Congresses.