| 4201 | Carte | XEN1.4 | Xenophon | Institutio Cyri | da |
| 4202 | Carte | XEN1.5 | Xenophon | De Re Equestri | da |
| 4203 | Carte | XEN1.6 | Xenophontis | Expeditio Cyri | da |
| 4204 | Carte | YEH1.1 | Yĕhūdāh hal-Lēwī | Das Buch al-Chazari des Abû-L-Ḥasan Jehuda Hallewi | da |
| 4205 | Carte | YEH1.2 | Yehudah ha-Leṿi | The Book of Kuzari | da |
| 4206 | Carte | YOU1.1 | Young, Spencer E. | Scholarly community at the early univerity of Paris : theologians, education and society, 1215-1248 | da |
| 4207 | Carte | YOU1.2 | Young, Spencer E. (ed.) | Crossing Boundaries at Medieval Universities | da |
| 4208 | Carte | YOU2.1 | Young, Patrick | Catalogus librorum manuscriptorum bibliothecae wigorniensis | da |
| 4209 | Carte | ZAB1.1 | Joseph Ibn Zabara | Le Livre de Délices | da |
| 4210 | Carte | ZEH1.1 | Zehnacker, Hubert ; Fredouille, Jean-Claude | Littérature latine | da |
