Columbia subject headings:
Grotius, Hugo, 1583-1645--Congresses.
International law--Congresses.
Harvard subject headings:
Grotius, Hugo, 1583-1645--Congresses.
International law--Congresses.
Princeton subject headings:
Grotius, Hugo, 1583-1645--Congresses.
Law (Philosophical concept)--Congresses.
Natural law--Congresses.