Columbia subject headings:
Industrialization--France--Roubaix--History.
Roubaix (France)--Population--History.
Harvard subject headings:
Industrialization--France--Roubaix--History.
Roubaix (France)--History.
Roubaix (France)--Population--History.
Roubaix (France)--Population.
Princeton subject headings:
Roubaix (France)--History.
Roubaix (France)--Population.