| 3866 | WUS1.1 | Wüsthof, Lucas | Schwabenspiegel und Augsburger Stadtrecht | da |
| 3867 | WYC1.1 | John Wycliff | On Universals | da |
| 3868 | WYC1.2 | John Wycliff, Ivan J. Mueller (ed.) | Tractatus de universalibus | da |
| 3869 | WYS1.1 | Wyser, Paul | Thomas von Aquin | da |
| 3870 | XEN1.1 | Xenophon | Anabase (Morceaux choisis) | da |
| 3871 | XEN1.2 | Xenophon | Memorabilia | da |
| 3872 | XEN1.3 | Xenophon | Anabasis | da |
| 3873 | XEN1.4 | Xenophon | Institutio Cyri | da |
| 3874 | XEN1.5 | Xenophon | De Re Equestri | da |
| 3875 | XEN1.6 | Xenophontis | Expeditio Cyri | da |
| 3876 | YEH1.1 | Yĕhūdāh hal-Lēwī | Das Buch al-Chazari des Abû-L-Ḥasan Jehuda Hallewi | da |
| 3877 | YEH1.2 | Yehudah ha-Leṿi | The Book of Kuzari | da |
| 3878 | YOU1.1 | Young, Spencer E. | Scholarly community at the early univerity of Paris : theologians, education and society, 1215-1248 | da |
| 3879 | YOU1.2 | Young, Spencer E. (ed.) | Crossing Boundaries at Medieval Universities | da |
| 3880 | YOU2.1 | Young, Patrick | Catalogus librorum manuscriptorum bibliothecae wigorniensis | da |
| 3881 | ZAB1.1 | Joseph Ibn Zabara | Le Livre de Délices | da |
| 3882 | ZEH1.1 | Zehnacker, Hubert ; Fredouille, Jean-Claude | Littérature latine | da |
| 3883 | ZEL1.1.1 | Zeller, Edoardo | La filosofia dei greci nel suo sviluppo storico (vol. I) | da |
| 3884 | ZEL1.1.2 | Zeller, Edoardo; Mondolfo, R. | La filosofia de greci nel suo sviluppo storico (vol. II) | da |
| 3885 | ZEL2.1 | Zeller, Franz | Die Apostolischen Väter | da |
| 3886 | ZIC1.1#1 | Zickermann, Kathrin | Across the German Sea. Early Modern Scottish Connections with the Wider Elbe-Weser Region | da |
| 3887 | ZIC1.1#2 | Zickermann, Kathrin | Across the German Sea. Early Modern Scottish Connections with the Wider Elbe-Weser Region | da |
| 3888 | ZWA1.1 | Zwaenepoel, John P. | Les quaestiones in Librum de causis atribuées à Henri de Gand | da |
| 3889 | ~A.XV/1 | | Dionysius | da |
| 3890 | ~A.XV/57 | *** | Melanges de l'Universite Saint-Joseph | da |
