Columbia subject headings:
Catholic Church--History--16th century--Congresses.
Papacy--History--1566-1799--Congresses.
Pius V, Pope, 1504-1572--Congresses.
Harvard subject headings:
Catholic Church--History--16th century--Congresses.
Papacy--History--1566-1799--Congresses.
Pius V, Pope, 1504-1572--Congresses.
Princeton subject headings:
Catholic Church--History--16th century--Congresses.
Papacy--History--1566-1799--Congresses.
Pius V, Pope, 1504-1572--Congresses.