Columbia subject headings:
Mosca, Gaetano, 1858-1941.
Political science--Italy--History--19th century.
Political science--Italy--History--20th century.
Political science.
Harvard subject headings:
Mosca, Gaetano, 1858-1941--Congresses.
Mosca, Gaetano, 1858-1941.
Political science--Italy--History--19th century--Congresses.
Political science--Italy--History--20th century--Congresses.
Princeton subject headings:
Mosca, Gaetano, 1858-1941.
Political science--Italy--History--19th century.
Political science--Italy--History--20th century.