Columbia subject headings:
Definition (Philosophy)--Early works to 1800.
Knowledge, Theory of--Early works to 1800.
Logic--Early works to 1800.
Harvard subject headings:
Definition (Philosophy)--Early works to 1800.
Knowledge, Theory of--Early works to 1800
Logic--Early works to 1800
Princeton subject headings:
Definition (Philosophy)--Early works to 1800.
Knowledge, Theory of--Early works to 1800.
Logic--Early works to 1800.