Columbia subject headings:
Harvard subject headings:
Hesse-Darmstadt (Germany)--History.
Isenburg (Principality)--History.
Mainz (Rhineland-Palatinate, Germany)--History
Thirty Years' War, 1618-1648
Princeton subject headings:
Hesse-Darmstadt (Germany)--History.
Isenburg (Principality)--History.
Mainz (Rhineland-Palatinate, Germany)--History.
Thirty Years' War, 1618-1648.