Columbia subject headings:
Crusades--First, 1096-1099--Jews--Germany.
Germany--Ethnic relations.
Jews--Germany--History--1096-1147.
Jews--Persecutions--Germany.
Harvard subject headings:
Crusades--First, 1096-1099--Jews--Germany.
Germany--Ethnic relations.
Jews--Germany--History--1096-1147.
Jews--Persecutions--Germany.
Princeton subject headings: