Columbia subject headings:
War (International law)
Harvard subject headings:
International Peace Conference (1899 : Hague, Netherlands)
International Peace Conference (1st : 1899 : Hague, Netherlands)
International Peace Conference (2nd : 1907 : Hague, Netherlands)
War (International law)
Princeton subject headings:
International Peace Conference (1899 : Hague, Netherlands)
International Peace Conference (2nd : 1907 : Hague, Netherlands)
War (International law)