Columbia subject headings:
Italy--Intellectual life--1789-1900.
Italy--Intellectual life--20th century.
Positivism--Italy--History.
Social sciences--Italy--History.
Sociology--Italy--History.
Harvard subject headings:
Italy--Intellectual life--1789-1900.
Italy--Intellectual life--20th century.
Positivism--History.
Positivism--Italy--History.
Social sciences--Italy--History.
Sociology--Italy--History
Princeton subject headings:
Italy--Intellectual life--1789-1900.
Italy--Intellectual life--20th century.
Positivism.