Columbia subject headings:
Civilization, Medieval--Congresses.
Europe--Emigration and immigration--Congresses.
Multiculturalism--Africa--Congresses.
Multiculturalism--East Asia--Congresses.
Multiculturalism--Europe--Congresses.
Harvard subject headings:
Civilization, Medieval--Congresses
Europe--Emigration and immigration--Congresses.
Multiculturalism--Africa--Congresses.
Multiculturalism--East Asia--Congresses.
Multiculturalism--Europe--Congresses
Princeton subject headings:
Civilization, Medieval--Congresses.
Europe--Emigration and immigration--Congresses.
Multiculturalism--Africa--Congresses.
Multiculturalism--East Asia--Congresses.
Multiculturalism--Europe--Congresses.