Columbia subject headings:
Harvard subject headings:
Knowledge, Sociology of--History--20th century.
Social sciences--Philosophy--History--20th century
Wittgenstein, Ludwig, 1889-1951--Political and social views.
Princeton subject headings:
Knowledge, Sociology of--History--20th century.
Social sciences--Philosophy--History--20th century.
Wittgenstein, Ludwig, 1889-1951--Political and social views.