Columbia subject headings:
Aristotle. De caelo.
Cosmology, Ancient.
Harvard subject headings:
Aristotle. De caelo. Book 1.
Astronomy--Early works to 1800
Four elements (Philosophy)--Early works to 1800.
Motion--Early works to 1800.
Science, Ancient.
Princeton subject headings:
Aristotle On the heavens. Book 1.
Astronomy--Early works to 1800.
Four elements (Philosophy)--Early works to 1800.
Motion--Early works to 1800.
Science, Ancient.