Columbia subject headings:
Harvard subject headings:
Communists--Germany (East)--Biography
Germany (East)--Politics and government.
Kessler, Heinz, 1920-
Politicians--Germany (East)--Biography
Princeton subject headings:
Communists--Germany (East)--Biography.
Germany (East)--Politics and government.
Kessler, Heinz, 1920-2017.
Politicians--Germany (East)--Biography.