Columbia subject headings:
Marx, Karl, 1818-1883.
Ontology.
Philosophy, Marxist.
Harvard subject headings:
Aristotle--Influence.
Marx, Karl, 1818-1883
Marx, Karl, 1818-1883--Contributions in ontology.
Ontology.
Philosophy, Marxist.
Princeton subject headings:
Marx, Karl, 1818-1883.
Ontology.
Philosophy, Marxist.