Columbia subject headings:
Harvard subject headings:
Immigrants--Patagonia (Argentina and Chile)--History--Congresses.
Patagonia (Argentina and Chile)--Ethnic relations--Congresses.
Welsh--Patagonia (Argentina and Chile)--Congresses.
Princeton subject headings:
Immigrants--Patagonia (Argentina and Chile)--History--Congresses.
Patagonia (Argentina and Chile)--Ethnic relations--Congresses.
Welsh--Patagonia (Argentina and Chile)--Congresses.