Columbia subject headings:
Harvard subject headings:
Asia--Emigration and immigration--Congresses.
Chinese--Asia--Congresses.
Chinese--Europe--Congresses.
Europe--Emigration and immigration--Congresses.
Princeton subject headings:
China--Emigration and immigration--Congresses.
Chinese--Asia--Congresses.
Chinese--Europe--Congresses.
Chinese--Migrations--Congresses.