Columbia subject headings:
Harvard subject headings:
Analysis (Philosophy)
Biology--Philosophy
Dialectical materialism.
History--Philosophy
Philosophy, Modern--20th century.
Wittgenstein, Ludwig, 1889-1951
Princeton subject headings:
Analysis (Philosophy)
Biology--Philosophy.
Dialectical materialism.
History--Philosophy.
Philosophy, Modern--20th century.
Wittgenstein, Ludwig, 1889-1951.