Ad Petri Cathedram
[de] Ad Petri cathedram
[es] Ad Petri Cathedram
[fr] Ad Petri cathedram
[id] Ad Petri Cathedram
[it] Ad Petri Cathedram
[la] Ad Petri Cathedram
[nl] Ad Petri Cathedram
[pl] Ad Petri Cathedram
[pt] Ad Petri Cathedram
[ru] Ad Petri Cathedram