Columbia subject headings:
Political refugees--Germany--Lower Saxony--Bibliography.
Refugees--Germany--Lower Saxony--Bibliography.
Harvard subject headings:
Political refugees--Germany--Lower Saxony--Bibliography.
Refugees--Germany--Lower Saxony--Bibliography.
Princeton subject headings:
Lower Saxony (Germany)--Emigration and immigration--Bibliography.
Lower Saxony (Germany)--Population--Bibliography.
Refugees--Germany--Lower Saxony--Bibliography.