Columbia subject headings:
Harvard subject headings:
Canada--Ethnic relations--Congresses.
Canada--Ethnic relations--Historiography--Congresses.
Cultural pluralism--Canada--Congresses.
Cultural pluralism--United States--Congresses.
Ethnic relations--Political aspects--Congresses.
Ethnicity--Canada--Congresses.
Ethnicity--United States--Congresses.
United States--Ethnic relations--Congresses.
United States--Ethnic relations--Historiography--Congresses.
Princeton subject headings:
Canada--Emigration and immigration--Congresses.
Canada--Ethnic relations--Congresses.
Cultural pluralism.
Immigrants--Canada--History--Congresses.
Immigrants--United States--History--Congresses.
United States--Emigration and immigration--Congresses.
United States--Ethnic relations--Congresses.