Columbia subject headings:
Aristotle. Organon.
Islamic philosophy--Early works to 1800.
Logic--Early works to 1800.
Harvard subject headings:
Aristotle. Organon
Islamic philosophy--Early works to 1800.
Logic--Early works to 1800
Princeton subject headings:
Aristotle. Organon.
Islamic philosophy--Early works to 1800.
Logic--Early works to 1800.