Columbia subject headings:
Catholic Church. Codex Juris Canonici. Canones 911-936.
Indulgences (Canon law)
Indulgences--History.
Indulgences.
Harvard subject headings:
Catholic Church. Codex juris canonici C. 911-936: De indulgentiis.
Indulgences (Canon law)
Indulgences--History.
Princeton subject headings:
Catholic Church. Codex juris canonici C. 911-936: De indulgentiis.
Indulgences (Canon law)
Indulgences--History.