Columbia subject headings:
Böll, Heinrich, 1917-1985--Criticism and interpretation.
Böll, Heinrich, 1917-1985. Fürsorgliche Belagerung.
Harvard subject headings:
Böll, Heinrich, 1917-1985--Criticism and interpretation.
Böll, Heinrich, 1917-1985. Fürsorgliche Belagerung.
Princeton subject headings:
Böll, Heinrich, 1917-1985--Criticism and interpretation.
Böll, Heinrich, 1917-1985. Fürsorgliche Belagerung.