• 202 Books

• 51 History
• 40 Catholic Church
• 27 Orthodox Eastern Church
• 20 Church history
• 20 Liturgy
• 19 Eastern churches
• 19 Relations
• 16 History of doctrines
• 11 Christianity
• 10 History and criticism
• 10 Syrian churches
• 8 Armenian Church
• 8 Criticism, interpretation, etc
• 8 John Chrysostom, Saint, -407
• 8 Pontificium Institutum Orientalium Studiorum
• 7 Civilization
• 7 Theology
• 6 Jesus Christ
• 6 Lord's Supper
• 5 Church of the East
• 5 Lord's Supper (Liturgy)
• 5 Syriac literature
• 4 Antiquities
• 4 Bible
• 4 Chaldean rite

• 21 Pontificium Institutum Orientalium Studiorum
• 12 Taft, Robert F
• 8 Hausherr, Irénée, 1891-1978
• 7 Winkler, Gabriele
• 6 Špidlík, Tomáš
• 4 Farrugia, Edward G
• 4 Hofmann, Georg, 1885-1956
• 4 Lavenant, René
• 3 Pampaloni, Massimo
• 3 Poggi, Vincenzo
• 3 Raineri, Osvaldo
• 3 Samir, Khalil
• 3 Vries, Wilhelm de
• 2 Archivio vaticano
• 2 Capizzi, Carmelo
• 2 Catholic Church
• 2 Duĭchev, Ivan
• 2 Farrugia, Edward G.
• 2 Garegin II, Catholicos of All Armenians, 1951-
• 2 Gordillo, Mauricio, 1894-1961
• 2 Hābtamikāél Kidāna
• 2 Mateos, Juan, 1917-2003
• 2 Monneret de Villard, Ugo
• 2 Orthodox Eastern Church
• 2 Parenti, Stefano

• 77 Italian
• 74 English
• 72 French
• 48 German
• 14 Latin
• 9 Greek, Ancient (to 1453)
• 5 Greek, Modern (1453-)
• 4 Armenian
• 4 Ethiopic
• 4 Spanish
• 3 Russian
• 2 Arabic
• 2 Syriac, Modern
• 1 Amharic
• 1 Coptic
• 1 Malayalam
• 1 Multiple languages
• 1 Syriac
• 1 Ukrainian

• 8 Italy
• 7 Turkey
• 6 Ethiopia
• 5 Byzantine Empire
• 5 Russia
• 5 Syria
• 4 Greece
• 4 Soviet Union
• 3 Iraq
• 3 Istanbul
• 3 Middle East
• 3 Rome
• 2 Armenia
• 2 Athos (Greece)
• 2 Bulgaria
• 2 Empire byzantin
• 2 Istanbul (Turkey)
• 2 Italie
• 2 Moyen-Orient
• 2 Orient
• 2 Poland
• 2 Ukraine
• 1 Albania
• 1 Albanië
• 1 Amalfi

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