Title: Dei concilii ecumenici
Subjects: Councils and synods, Conciliar theory, Vatican Council (1st : 1869-1870 : Basilica di San Pietro in Vaticano), Vatican Council (1st : 1869-1870 : Basilica di San Pietro in Vaticano) http://id.loc.gov/authorities/names/n50000581, Vatican Council (1st : 1869-1870)