Columbia subject headings:
Harvard subject headings:
Catholic Church--Diplomatic service.
Mangelli, Andrea, -1655--Correspondence.
Papal nuncios--Benelux countries--Correspondence.
Princeton subject headings:
Benelux countries--Church history--Sources.
Benelux countries--Politics and government--Sources.
Catholic Church--Diplomatic service.
Church and state--History--17th century--Sources.
Mangelli, Andrea, -1655--Correspondence.
Papal nuncios--Benelux countries--Correspondence.