Columbia subject headings:
Catholic Church--Foreign relations--Germany--History.
Festschriften--Germany.
Germany--Foreign relations--Catholic Church--History.
Germany--History--Hohenstaufen, 1138-1254.
Hohenstaufen, House of.
Papacy--History--To 1309.
Harvard subject headings:
Catholic Church--Foreign relations--Germany--History.
Festschriften.
Germany--Foreign relations--Catholic Church.
Germany--History--Hohenstaufen, 1138-1254.
Hohenstaufen, House of.
Papacy--History--To 1309
Princeton subject headings:
Catholic Church--Foreign relations--Germany.
Germany--Foreign relations--Catholic Church.
Germany--History--Hohenstaufen, 1138-1254.
Hohenstaufen, House of.
Papacy--History--To 1309.