| 1891 | KON1.2 | Konig-Pralong, Katherine | Avenement de l'aristotelisme en terre chretienne | da |
| 1892 | KON1.3 | König-Pralong, Catherine | Etre, Essence & Contingence. Henri de Gand, Gilles de Rome, Godefroid de Fontaines | da |
| 1893 | KON1.4 | König-Pralong, Catherine | Médiévisme philosophique et raison moderne. De Pierre Bayle à Ernest Renan | da |
| 1894 | KOO1.1 | Kooper, Erik; Levelt, Sjoerd | The Medieval Chronicle IX | da |
| 1895 | KOT1.1 | Kotkas, Toomas | Royal Police Ordinances In Early Modern Sweden The Emergence Of Voluntaristic Understanding Of Law | da |
| 1896 | KOW1.1 | Kowalczyk, Maria | Krakowskie mowy uniwersyteckie z pierwszej polowy XV wieku | da |
| 1897 | KRA1.1 | Kraut, Richard | The Cambridge companion to Plato | da |
| 1898 | KRA2.1 | Kraemer, Joel L. | Humanism in the renaissance of Islam: the cultural revival during the Buyid age | da |
| 1899 | KRE1.1 | Kremer, Klaus | Die Neoplatonische Seinsphilosophie und ihre Wirkung auf Thomas von Aquin | da |
| 1900 | KRE2.1 | Kretzmann, N.; Kenny, A.; Pinborg, A. | The Cambridge Companion to Later Medieval Philosophy | da |
| 1901 | KRI1.1 | Kristeller, Paul Oskar | Latin Manuscript Books before 1600 | da |
| 1902 | KRI1.2.1 | Kristeller, Paul Oskar (ed.) | Catalogus translationum et commentariorum: Medieval and Renaissance Latin Translations and Commentaries | da |
| 1903 | KRI1.3 | Kristeller, Paul Oskar | Renaissance thought and its sources | nu |
| 1904 | KRU1.1 | Krüger, Max | Griechisches Ubungsbuch | da |
| 1905 | KRU2.1 | Kruger, Gerhart | Ragione e Passione, L'essenza del pensiero platonico | da |
| 1906 | KUH1.1 | Kühn, Wilfried | Quel savoir après le scepticisme? | da |
| 1907 | KÜN1.1 | Küng, Hans | Dans Christentum.Wesen und Geschichte | da |
| 1908 | KÜN1.2 | Küng, Hans | Erkämpfte Freiheit | da |
| 1909 | KÜN1.3 | Küng, Hans | Die Kirche | da |
| 1910 | KUN2.1 | Kunitzsch, Paul | The Arabs and the stars: texts and traditions on the fixed stars, and their influence in medieval Europe | da |
| 1911 | KUR1.1.1 | Kurfess, A. (ed.) | Appendix Sallustiana I | da |
| 1912 | KUR1.1.2 | Kurfess, A. (ed.) | Appendix Sallustiana II | da |
| 1913 | KUR2.1 | Kurdziałek, Marian | Prolegomena zu Davidis de Dinanto Quaternulorum fragmenta | da |
| 1914 | LAB1.1 | Labarbe, Jules | L`Homere de Platon | da |
| 1915 | LAC1.1 | Lacrosse, Joachim | La philosophie de Plotin. Intellect et discursivite | nu |
| 1916 | LAC2.1 | Lactantius | Von den Todesarten der Verfolger et al. | da |
| 1917 | LAF1.1 | Lafleur, Claude | Quatre introductions à la philosophie au XIIIe siècle | da |
| 1918 | LAG1.1.1 | Lagerlund, Henrik (ed.) | Encyclopedia of Medieval Philosophy. Philosophy Between 500 and 1500. Vol. 1 A-L | da |
| 1919 | LAG1.1.2 | Lagerlund, Henrik (ed.) | Encyclopedia of Medieval Philosophy. Philosophy Between 500 and 1500. Vol. 2 M-Z | da |
| 1920 | LAK1.1 | Laks, Andre | Diogene d'Apollonie | da |
| 1921 | LAN1.1 | Langermann, Y. Tzvi (ed.) | Avicenna and his legacy | da |
| 1922 | LAN2.1 | Landgraf, Artur Michael | Introduction a l'histoire de la littterature theologique de la scolastique naissante | da |
| 1923 | LAN3.1#1 | Lang, Helen S. | Aristotle's Physics and its medieval varieties | da |
| 1924 | LAN3.1#2 | Lang, Helen S. | Aristotle's Physics and its medieval varieties | da |
| 1925 | LAN4.1 | Landersdorfer, P. S. (tr.) | Ausgewälte Schriften der Syrischer Dichter | da |
| 1926 | LAN5.1 | Lancel, Serge | Saint Augustin | da |
| 1927 | LAS1.1 | Lassere, F. | Etude sur les extraits medievaux de Strabon suivie d'un traite inedit de Michel Psellus | da |
| 1928 | LAS2.1.1 | Laszlo, Alexandru | Lectura lui Dante. Infernul | da |
| 1929 | LAS2.1.2 | Laszlo, Alexandru | Lectura lui Dante. Purgatoriul | da |
| 1930 | LAS2.1.3 | Laszlo, Alexandru | Lectura lui Dante. Paradisul | da |
| 1931 | LAU1.1 | Laurent, Jerome | Les fondements de la nature dans la pensee de Plotin. Procession et participarion | da |
| 1932 | LAU2.1 | Laurand, L. | Etudes sur le style des Discours de Ciceron | da |
| 1933 | LAV1.1 | Rus, Anton; Castaldini, Alberto (ed.) | Sapientia et scientia theologica: in honorem Renzo Lavatori per l'80 genetliaco | da |
| 1934 | LEA1.1 | Leal, Jerónimo | Actas Latinas de Mártires Africanos | da |
| 1935 | LEB1.1 | Le Boulluec, Alain; Gabriela Soares Santoprete, Luciana; Timotin, Andrei (eds.) | Exégèse, révélation et formation des dogmes dans l’Antiquité tardive | da |
| 1936 | LEC1.1 | Lechner, Joan Marie | Renaissance concepts of the commonplaces | nu |
| 1937 | LEE1.1 | Lee, Richard A. | Science, the singular, and the questions of theology | da |
| 1938 | LEE2.1 | Pieter de Leemans (ed.) | Translating at the Court. Bartholomew o Messina and Cultural Life at the Court of Manfred, King of Sicily | da |
| 1939 | LEE2.2 | Pieter de Leemans (ed.) | Aristotle's Problemata in different Times and Tongues | da |
| 1940 | LEE2.3 | Pieter de Leemans (ed.) | Between Text and Tradition. Pietro d'Abano and the Reception of Pseudo-Aristotle's Problemata Physica in the Middle Ages | da |
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