Columbia subject headings:
Harvard subject headings:
Adult education.
History--Study and teaching--Europe.
History--Study and teaching--Germany
Immigrants--Study and teaching--Europe.
Immigrants--Study and teaching--Germany.
Political science--Study and teaching--Europe.
Political science--Study and teaching--Germany
Refugees--Study and teaching--Europe.
Refugees--Study and teaching--Germany.
Princeton subject headings:
Adult education.
History--Study and teaching--Europe.
History--Study and teaching--Germany.
Immigrants--Study and teaching--Europe.
Immigrants--Study and teaching--Germany.
Political science--Study and teaching--Europe.
Political science--Study and teaching--Germany.
Refugees--Study and teaching--Europe.
Refugees--Study and teaching--Germany.