| 1911 | KUH1.1 | Kühn, Wilfried | Quel savoir après le scepticisme? | da |
| 1912 | KÜN1.1 | Küng, Hans | Dans Christentum.Wesen und Geschichte | da |
| 1913 | KÜN1.2 | Küng, Hans | Erkämpfte Freiheit | da |
| 1914 | KÜN1.3 | Küng, Hans | Die Kirche | da |
| 1915 | KUN2.1 | Kunitzsch, Paul | The Arabs and the stars: texts and traditions on the fixed stars, and their influence in medieval Europe | da |
| 1916 | KUR1.1.1 | Kurfess, A. (ed.) | Appendix Sallustiana I | da |
| 1917 | KUR1.1.2 | Kurfess, A. (ed.) | Appendix Sallustiana II | da |
| 1918 | KUR2.1 | Kurdziałek, Marian | Prolegomena zu Davidis de Dinanto Quaternulorum fragmenta | da |
| 1919 | LAB1.1 | Labarbe, Jules | L`Homere de Platon | da |
| 1920 | LAC1.1 | Lacrosse, Joachim | La philosophie de Plotin. Intellect et discursivite | nu |
| 1921 | LAC2.1 | Lactantius | Von den Todesarten der Verfolger et al. | da |
| 1922 | LAF1.1 | Lafleur, Claude | Quatre introductions à la philosophie au XIIIe siècle | da |
| 1923 | LAG1.1.1 | Lagerlund, Henrik (ed.) | Encyclopedia of Medieval Philosophy. Philosophy Between 500 and 1500. Vol. 1 A-L | da |
| 1924 | LAG1.1.2 | Lagerlund, Henrik (ed.) | Encyclopedia of Medieval Philosophy. Philosophy Between 500 and 1500. Vol. 2 M-Z | da |
| 1925 | LAK1.1 | Laks, Andre | Diogene d'Apollonie | da |
| 1926 | LAN1.1 | Langermann, Y. Tzvi (ed.) | Avicenna and his legacy | da |
| 1927 | LAN2.1 | Landgraf, Artur Michael | Introduction a l'histoire de la littterature theologique de la scolastique naissante | da |
| 1928 | LAN3.1#1 | Lang, Helen S. | Aristotle's Physics and its medieval varieties | da |
| 1929 | LAN3.1#2 | Lang, Helen S. | Aristotle's Physics and its medieval varieties | da |
| 1930 | LAN4.1 | Landersdorfer, P. S. (tr.) | Ausgewälte Schriften der Syrischer Dichter | da |
| 1931 | LAN5.1 | Lancel, Serge | Saint Augustin | da |
| 1932 | LAS1.1 | Lassere, F. | Etude sur les extraits medievaux de Strabon suivie d'un traite inedit de Michel Psellus | da |
| 1933 | LAS2.1.1 | Laszlo, Alexandru | Lectura lui Dante. Infernul | da |
| 1934 | LAS2.1.2 | Laszlo, Alexandru | Lectura lui Dante. Purgatoriul | da |
| 1935 | LAS2.1.3 | Laszlo, Alexandru | Lectura lui Dante. Paradisul | da |
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