Columbia subject headings:
Descartes, René, 1596-1650--Criticism and interpretation.
Ontology.
Plato--Criticism and interpretation.
Harvard subject headings:
Descartes, René, 1596-1650--Criticism and interpretation.
Ontology.
Plato
Plato--Criticism and interpretation.
Princeton subject headings:
Descartes, René, 1596-1650--Criticism and interpretation.
Ontology.
Plato--Criticism and interpretation.