Columbia subject headings:
Rural-urban relations--Europe, Southern--History--Congresses.
Rural-urban relations--France--History--Congresses.
Harvard subject headings:
Rural-urban relations--Europe, Southern--History--Congresses.
Rural-urban relations--France--History--Congresses.
Princeton subject headings:
Rural-urban relations--Europe, Southern--History--Congresses.
Rural-urban relations--France--History--Congresses.