Columbia subject headings:
Catholic Church. Council of Lyons (1st : 1245)
Council of Lyon (2nd : 1274 : Lyon, France)
Harvard subject headings:
Catholic Church. Council of Lyons (1st : 1245)
Catholic Church. Council of Lyons (2nd : 1274)
Council of Lyon (2nd : 1274 : Lyon, France)
Lyons, Council of, 1st, 1245.
Princeton subject headings:
Council of Lyons (1st, 1245).
Council of Lyons (2nd, 1274).