Columbia subject headings:
Harvard subject headings:
Act (Philosophy)--Early works to 1800.
Cosmogony--Early works to 1800.
Siger, of Brabant, 1230-approximately 1283. De aeternitate mundi.
Universals (Philosophy)--Early works to 1800.
Princeton subject headings:
Act (Philosophy)--Early works to 1800.
Cosmogony--Early works to 1800.
Siger, of Brabant, approximately 1230-approximately 1283. De aeternitate mundi.
Universals (Philosophy)--Early works to 1800.