Columbia subject headings:
Catholic Church--Catechisms--History--18th century.
Catholic Church--Italy--Lombardy--History--18th century.
Lombardy (Italy)--Church history.
Harvard subject headings:
Catholic Church--Catechisms--History--18th century.
Catholic Church--Italy--Lombardy--History--18th century.
Lombardy (Italy)--Church history.
Princeton subject headings:
Catholic Church--Catechisms--History--18th century.
Catholic Church--Italy--Lombardy--History--18th century.
Lombardy (Italy)--Church history.