Columbia subject headings:
Kohl, Helmut, 1930-2017--Congresses.
Politicians--Germany--Congresses.
Prime ministers--Germany--Congresses.
Harvard subject headings:
Kohl, Helmut, 1930-2017--Congresses.
Politicians--Germany--Congresses.
Prime ministers--Germany--Congresses.
Princeton subject headings:
Kohl, Helmut, 1930-2017--Congresses.
Politicians--Germany--Biography--Congresses.
Prime ministers--Germany--Biography--Congresses.