Title: Briefe um das I. Vaticanum
Subjects: Correspondence, History, History of doctrines, Infallibility, Popes, Sources, Vatican Council (1st : 1869-1870), Vatican Council (1st : 1869-1870 : Basilica di San Pietro in Vaticano), Concilie Vaticanum I.
People: Joseph Fessler (1813-1872)
Time periods: 19th century