Columbia subject headings:
International law--Early works to 1800.
International relations--Early works to 1800.
Natural law--Early works to 1800.
Political science--Early works to 1800.
Harvard subject headings:
International law--Early works to 1800.
Natural law--Early works to 1800.
Political science--Early works to 1800
Princeton subject headings:
International law--Early works to 1800.
International relations--Early works to 1800.
Natural law--Early works to 1800.
Political science--Early works to 1800.