• 30 Books
• 6 Microforms

• 7 Religious aspects
• 5 Early works to 1800
• 4 History
• 3 Apologetics
• 3 Christianity and other religions
• 3 Church history
• 3 Doctrines
• 3 History of doctrines
• 2 Bible
• 2 Bible. New Testament
• 2 Catholic Church
• 2 Faith and reason
• 2 History and criticism
• 2 Joachim, of Fiore, approximately 1132-1202
• 2 Judaism
• 2 Liber de concordia Novi ac Veteris Testamenti
• 2 Lutheran Church
• 2 Prayer
• 2 Prophecies
• 2 Providence and government of God
• 2 Relation to the Old Testament
• 2 Relations
• 2 Spiritual life
• 2 Theological anthropology

• 3 Wolff, Christian, Freiherr von, 1679-1754
• 2 Heshusius, Tilemann, 1527-1588
• 2 Joachim, of Fiore, approximately 1132-1202
• 2 Patschovsky, Alexander
• 1 Abner, of Burgos, approximately 1270-
• 1 Aschoff, Diethard
• 1 Augustine, of Hippo, Saint, 354-430
• 1 Bahrdt, Karl Friedrich, 1741-1792
• 1 Bandt, Cordula
• 1 Becker, Matthias, 1982-
• 1 Böcklin, Christoph
• 1 Böhme, Jakob, 1575-1624
• 1 Celsus (Platonic philosopher), active 180
• 1 Cochlaeus, Johannes, 1479-1552
• 1 Corsini, Lucia
• 1 Crautwald, Valentin, 1490?-1545
• 1 Ebner, Margaret, approximately 1291-1351
• 1 Edelmann, Johann Christian, 1698-1767
• 1 Grabmann-Institut zur Erforschung der Mittelalterlichen Theologie und Philosophie
• 1 Gregory, of Nazianzus, Saint
• 1 Habermehl, Peter
• 1 Hagen, Gottlieb Friedrich, 1710-1769
• 1 Heinrich, von Nördlingen, active 1332-1351
• 1 Henderson, Duane R., 1967-
• 1 Keim, Theodor, 1825-1878

• 6 Latin
• 2 Greek, Ancient (to 1453)
• 1 English
• 1 Italian
• 1 Romance (Other)

• 2 Germany
• 1 Africa (Roman province)
• 1 England
• 1 Rome

• 5 Controversial literature
• 1 Apologetics
• 1 Biography
• 1 Christian literature, Latin (Medieval and modern)
• 1 Controversial works
• 1 Correspondence
• 1 Dialogues, Latin (Medieval and modern)
• 1 Sources
• 1 Translations into German

Limit year range