Columbia subject headings:
Democracy--Italy--History--19th century.
Intelligence officers--France--Biography.
Italy--History--19th century.
Mazzini, Giuseppe, 1805-1872--Influence.
Nationalism--Italy--History--19th century.
Nice (France)--Biography.
Sappia, Henri, 1833-1906.
Harvard subject headings:
Intelligence officers--France--Biography.
Italy--History--19th century.
Sappia, Henri, 1833-1906.
Princeton subject headings:
Intelligence officers--France--Biography.
Italy--History--19th century.
Sappia, Henri, 1833-1906.