Columbia subject headings:
Italy--Social conditions--19th century.
Italy--Social conditions--20th century.
Malnutrition--Italy--History--19th century.
Malnutrition--Italy--History--20th century.
Pellagra--Italy--History--19th century.
Pellagra--Italy--History--20th century.
Harvard subject headings:
Italy--Social conditions--19th century.
Italy--Social conditions--20th century.
Malnutrition--Italy--History--19th century.
Malnutrition--Italy--History--20th century.
Pellagra--Italy--History--19th century.
Pellagra--Italy--History--20th century.
Princeton subject headings: