Columbia subject headings:
Milan (Italy)--Church history--Sources.
Milan (Italy)--History--To 1535--Sources.
Patarines--History--Sources.
Harvard subject headings:
Milan (Italy)--Church history--Sources.
Milan (Italy)--History--To 1535--Sources.
Patarines--History--Sources.
Princeton subject headings:
Milan (Italy)--Church history--Sources.
Milan (Italy)--History--To 1535--Sources.
Patarines--History--Sources.