Columbia subject headings:
Bologna (Italy : Province)--Economic conditions.
Bologna (Italy : Province)--Politics and government.
Bologna (Italy : Province)--Social conditions.
Social conflict--Italy--Bologna (Province)--History.
Harvard subject headings:
Bologna (Italy : Province)--Economic conditions.
Bologna (Italy : Province)--Politics and government.
Bologna (Italy : Province)--Social conditions.
Social conflict--Italy--Bologna (Province)--History.
Princeton subject headings:
Bologna (Italy : Province)--Economic conditions.
Bologna (Italy : Province)--Politics and government.
Bologna (Italy : Province)--Social conditions.
Social conflict--Italy--Bologna (Province)--History.