Columbia subject headings:
Böll, Heinrich, 1917-1985--Criticism and interpretation--Congresses.
Böll, Heinrich, 1917-1985--Political and social views--Congresses.
Böll, Heinrich, 1917-1985--Religion--Congresses.
Harvard subject headings:
Böll, Heinrich, 1917-1985--Criticism and interpretation--Congresses.
Böll, Heinrich, 1917-1985--Political and social views--Congresses.
Böll, Heinrich, 1917-1985--Religion--Congresses.
Princeton subject headings:
Böll, Heinrich, 1917-1985--Criticism and interpretation--Congresses.
Böll, Heinrich, 1917-1985--Political and social views--Congresses.
Böll, Heinrich, 1917-1985--Religion--Congresses.