Columbia subject headings:
Harvard subject headings:
Canada--Emigration and immigration--Congresses.
North America--Emigration and immigration--Congresses.
Social integration--Canada--Congresses.
Social integration--North America--Congresses.
Princeton subject headings:
Canada--Emigration and immigration--Congresses.
North America--Emigration and immigration--Congresses.
Social integration--Canada--Congresses.
Social integration--North America--Congresses.