Columbia subject headings:
Harvard subject headings:
Political prisoners--Germany (East)--Biography
Political prisoners--Germany (East)--Psychology.
Political prisoners--Germany (East)--Social conditions.
Political prisoners--Health and hygiene--Germany (East)--History.
Princeton subject headings:
Political prisoners--Germany (East)--Psychology.
Political prisoners--Germany (East)--Social conditions.
Political prisoners--Health and hygiene--Germany (East).