Columbia subject headings:
Forced labor--Germany (East)--History.
Germany (East)--Social conditions.
Prisoners--Germany (East)--History.
Harvard subject headings:
Forced labor--Germany (East)--History.
Germany (East)--Social conditions
Prisoners--Germany (East)--History.
Princeton subject headings:
Forced labor--Germany (East)--History.
Germany (East)--Social conditions--History.
Prisoners--Germany (East)--History.