Columbia subject headings:
Harvard subject headings:
Rapido River Valley (Italy)--Economic conditions.
Rapido River Valley (Italy)--History.
Sant'Elia Fiumerapido (Italy)--Economic conditions.
Sant'Elia Fiumerapido (Italy)--History.
Princeton subject headings:
Rapido River (Italy)
Rapido River Valley (Italy)--Economic conditions.
Rapido River Valley (Italy)--History.
Sant'Elia Fiumerapido (Italy)--Economic conditions.
Sant'Elia Fiumerapido (Italy)--History.