Columbia subject headings:
Harvard subject headings:
Agriculture--Economic aspects--Italy--Colle Salvetti.
Colle Salvetti (Italy)--Economic conditions.
Colle Salvetti (Italy)--Politics and government.
Colle Salvetti (Italy)--Social conditions.
Princeton subject headings:
Colle Salvetti (Italy)--Economic conditions.
Colle Salvetti (Italy)--History.
Colle Salvetti (Italy)--Politics and government.
Public health--Italy--Colle Salvetti--History.