Columbia subject headings:
France--Economic conditions--19th century.
France--Social conditions--19th century.
Political science--France--History--19th century.
Technological innovations--France--History--19th century.
Harvard subject headings:
France--Economic conditions--19th century.
France--Social conditions--19th century.
Political science--France--History--19th century.
Technological innovations--France--History--19th century.
Princeton subject headings:
France--Economic conditions--19th century.
France--Social conditions--19th century.
Political science--France--History--19th century.
Technological innovations--France--History--19th century.