Columbia subject headings:
Althusius, Johannes, 1557-1638.
Grotius, Hugo, 1583-1645.
Vollenhoven, C. van (Cornelis), 1874-1933.
World politics.
Harvard subject headings:
Althusius, Johannes, 1557-1638.
Grotius, Hugo, 1583-1645
Vollenhoven, Cornelius van, 1874-1933.
World politics
Princeton subject headings: