Columbia subject headings:
Aristotle.
Descartes, René, 1596-1650.
Knowledge, Theory of.
Subject (Philosophy)
Harvard subject headings:
Aristotle--Contributions in theory of knowledge.
Descartes, René, 1596-1650--Knowledge, Theory of.
Subject (Philosophy)
Princeton subject headings:
Aristotle--Knowledge, Theory of.
Descartes, René, 1596-1650--Knowledge, Theory of.
Subject (Philosophy)