Columbia subject headings:
Harvard subject headings:
Europe--Ethnic relations--Congresses.
Europe--Race relations--Congresses.
Race discrimination--Government policy--Europe--Congresses.
Racism--Europe--Congresses.
Violence--Government policy--Europe--Congresses.
Xenophobia--Europe--Congresses.
Princeton subject headings:
Europe--Ethnic relations--Congresses.
Europe--Race relations--Congresses.
Race discrimination--Government policy--Europe--Congresses.
Racism--Europe--Congresses.
Violence--Government policy--Europe--Congresses.
Xenophobia--Europe--Congresses.