Columbia subject headings:
Harvard subject headings:
Aristotle. Categoriae--Early works to 1800.
Aristotle. De interpretatione--Early works to 1800.
Aristotle. Prior analytics--Early works to 1800.
Logic--Early works to 1800
Porphyry, approximately 234-approximately 305. Isagoge--Early works to 1800.
Princeton subject headings:
Aristotle. Categoriae--Early works to 1800.
Aristotle. De interpretatione--Early works to 1800.
Aristotle. Prior analytics--Early works to 1800.
Logic--Early works to 1800.
Porphyry, approximately 234-approximately 305. Isagoge--Early works to 1800.