Columbia subject headings:
Harvard subject headings:
Epidemics--Italy--Marche--History--19th century.
Leopardi, Monaldo, conte, 1776-1847.
Marche (Italy)--History.
Princeton subject headings:
Communicable diseases--Italy--Recanati--History.
Epidemics--Italy--Marche--History.
Epidemics--Italy--Recanati--History.
Leopardi, Monaldo, conte, 1776-1847.
Malaria--Italy--Marche--History.