Columbia subject headings:
Friars--History--To 1500--Congresses.
Poverty--Religious aspects--Christianity--History of doctrines--Middle Ages, 600-1500--Congresses.
Harvard subject headings:
Poverty, Vow of--History of doctrines--Middle Ages, 600-1500.
Poverty--Religious aspects--Catholic Church--History of doctrines--Middle Ages, 600-1500.
Princeton subject headings: