Columbia subject headings:
Africa, North--Politics and government.
Railroads--Africa, North--History.
Harvard subject headings:
Africa, North--Politics and government.
Algeria--Economic conditions--19th century.
Algeria--Politics and government--19th century.
Compagnie de Bône à Guelma--History--19th century.
Railroads--Africa, North--History.
Tunisia--Economic conditions--19th century.
Tunisia--Politics and government--19th century.
Princeton subject headings:
Africa, North--Politics and government.
Railroads--Africa, North--History.