Columbia subject headings:
Bölling, Klaus, 1928-
Diplomats--Germany (East)--Biography.
Diplomats--Germany (West)--Biography.
Germany (East)--Politics and government.
Germany (East)--Relations--Germany (West)
Germany (West)--Relations--Germany (East)
Harvard subject headings:
Bölling, Klaus, 1928-
Germany (East)--Foreign relations--Germany (West)
Germany (West)--Foreign relations--Germany (East)
Princeton subject headings:
Bölling, Klaus, 1928-
Diplomats--Germany (East)--Biography.
Diplomats--Germany (West)--Biography.
Germany (East)--Politics and government.
Germany (East)--Relations--Germany (West)
Germany (West)--Relations--Germany (East)