| 3421 | SIR1.3 | Sirat, Colette | A history of Jewish philosophy in the middle ages | da |
| 3422 | SIS1.1 | Siserman, Dan | Teologia istoriei la Gioacchino din Fiore | nu |
| 3423 | SIS1.2 | Siserman, Dan; Tat, Alin (eds.) | Spicilegium Philosophicum – Studii de Filosofie | da |
| 3424 | SLE1.1 | Sleeman, J. H.; Pollet, Gilbert | Lexicon Plotinianum | da |
| 3425 | SLO1.1 | Slotemaker, J., Witt, J. | Robert Holcot | nu |
| 3426 | SMA1.1 | Šmahel, František | Charles University in the Middle Ages. Selected studies | da |
| 3427 | SMA1.2 | Šmahel, František (ed.); Pavlicek, Ota (colab.) | A Companion to Jan Hus | da |
| 3428 | SME1.1 | Smet, Joachim (ed.) | Manuscripts in the Vatican Library relating to the Carmelite Order | da |
| 3429 | SMI1.1 | Smith, Lesley | The Glossa Ordinaria. The Making of a Medieval Bible Commentary | da |
| 3430 | SMI2.1.1 | Martinus Smiglecius | Commentaria in Organum Aristotelis, vol. I | da |
