Columbia subject headings:
Lodging-houses--France--Paris--History.
Migration, Internal--France--Paris--History.
Paris (France)--Emigration and immigration--History.
Paris (France)--Social conditions.
Harvard subject headings:
Lodging-houses--France--Paris--History.
Migration, Internal--France--Paris--History.
Paris (France)--Emigration and immigration--History.
Paris (France)--Social conditions
Princeton subject headings:
Immigrants--France--Paris--History.
Paris (France)--Ethnic relations--History.