| 2931 | NUC1.2 | Nuchelmans, Gabriel | Late-Scholastic and Humanist Theories of Proposition | nu |
| 2932 | NUC1.1 | Nuchelmans, Gabriel | Theories of the Proposition. Ancient and medieval conceptions of the bearers of truth and falsity | da |
| 2933 | NUM1.1 | Numenius | Fragments, ed. Edouard des Places | da |
| 2934 | NUY1.1 | Nuyens, Francois | L'evolution de la psychologie d'Aristote | da |
| 2935 | OME1.1 | O'Meara, Dominic | Plotin. Une introduction aux Enneades | da |
| 2936 | OME1.2 | O'Meara, Dominic J. | Cosmology and politics in Plato's later works | da |
| 2937 | OAN1.1 | Oancea, Maria Luiza | Limba greacă veche. Sintaxa cazurilor. O nouă teoretizare | da |
| 2938 | OAN1.2 | Oancea, Maria Luiza (ed.) | Capita selecta iuvenum | da |
| 2939 | HTKNT11.2.1 | Oberlinner, Lorenz | Die Pastoralbriefe. Erster Timotheusbrief | da |
| 2940 | HTKNT11.2.2 | Oberlinner, Lorenz | Die Pastoralbriefe. Zweiter Timotheusbrief | da |
| 2941 | HTKNT11.2.3 | Oberlinner, Lorenz | Die Pastoralbriefe. Titusbriefe | da |
| 2942 | OBE1.1 | Obermeier, Anita | The history and anatomy of auctorial self-criticism in the European Middle Ages | nu |
| 2943 | ~C.118 | Obrist, Barbara | La cosmologie medievale. Textes et images. I. Les fondements antiques | da |
| 2944 | CON1.2 | Obrist, Barbara; Caiazzo, Irene (eds.) | Guillaume de Conches: Philosophie et science au XIIe siècle | da |
| 2945 | OCK1.4 | Ockham, William | Über die Verknüpfung der Tugenden | da |
| 2946 | OCK1.3 | Ockham, William | Despre universalii | da |
| 2947 | OCK1.5 | Ockham, William | Texte zur Theorie der Erkenntnis und der Wissenschaft | da |
| 2948 | OCK1.6 | Ockham, William | Texte zur Theorie der Erkenntnis und der Wissenschaft et Summa logicae, I, 14-25 şi II, 27 | da |
| 2949 | OCK1.2 | Ockham, William | Traite sur la predestination | da |
| 2950 | OCK1.7 | Ockham, William | Intuition et abstraction | da |
| 2951 | ~E.1 | Oelmueller;Doelle-Oelmuler;Ebach;Przybyzski | Diskurs:Religion | da |
| 2952 | OGL1.1 | Ogliari, D. | Gratia et certamen. The Relationship between Grace and Free Will in the Discussion of Augustine with the so-called Semipelagians | nu |
| 2953 | OLI1.1 | Oliva, Adriano | Les débuts de l'enseignement de Thomas d'Aquin et sa conception de la Sacra doctrina | da |
| 2954 | OLI2.2 | Olivi, Jean Pierre | Über die menschliche Freiheit | da |
| 2955 | OLI2.1 | Olivi, Jean Pierre | Quaestiones in secundum librum sententiarum ( 72-118) | da |
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