Columbia subject headings:
Harvard subject headings:
Coal miners--Germany--Saarland--History.
Housing policy--Germany--Saarland--History.
Industrial housing--Germany--Saarland--History.
Saarland (Germany)--Social conditions.
Working class--Dwellings--Germany--Saarland--History.
Princeton subject headings:
Mineral industries--Germany (West)--Saarland.
Saarland (Germany)--History.