Columbia subject headings:
Feuerbach, Ludwig, 1804-1872--Political and social views--Congresses.
Harvard subject headings:
Feuerbach, Ludwig, 1804-1872--Congresses.
Feuerbach, Ludwig, 1804-1872--Political and social views--Congresses.
Philosophy, German--19th century--Congresses.
Philosophy, Modern--19th century--Congresses.
Political science--Philosophy--Congresses
Princeton subject headings:
Feuerbach, Ludwig, 1804-1872--Political and social views--Congresses.