| 1521 | Carte | PAR2.1 | Pareti, Luigi | Il mondo greco-romano | da |
| 1522 | Carte | MAR16.8 | Maritain, Jacques | Il n'y a pas de savoir sans intuitivite | da |
| 1523 | Carte | GIR1.1 | Girgenti, Giuseppe | Il pensiero forte di Porfirio. Mediazione fra henologia platonica e ontologia aristotelica | da |
| 1524 | Carte | RAN3.1 | Randi, Eugenio | Il sovrano e l'orologiaio | da |
| 1525 | Carte | HOM1.7.6 | Homer | Iliad (book VI) | nu |
| 1526 | Carte | HOM1.7.22 | Homer | Iliad (book XXII) | da |
| 1527 | Carte | HOM1.7.24 | Homer | Iliad (book XXIV) | da |
| 1528 | Carte | HOM1.1 | Homer | Ilias, ed. G. Dindorf | da |
| 1529 | Carte | TRI1.1 | Triphiodorus | Ilii excidium | da |
| 1530 | Carte | VAS1.4 | Vasiliu, Anca | Images de soi dans l'Antiquite tardive | da |
| 1531 | Articol | X-war1.1 | Warren, E. W. | Imagiantion in Plotinus | da |
| 1532 | Carte | ANI1.1 | Alexandra Anisie | Imaginea, imaginatia si memoria in arta lui Giordano Bruno. Teza de doctorat | da |
| 1533 | Carte | GUD1.1 | Gudeman, Alfred (ed.) | Imagines philologorum. 160 Bildnisse aus der Zeit von der Renaissance bis zur Gegenwart | da |
| 1534 | Carte | EME2.1 | Emerson, Jan Swango; Feiss, Hugh (eds.) | Imagining heaven in the Middle Ages : a book of essays | nu |
| 1535 | Carte | EBB1.1 | Ebbott, Mary | Imagining illegitimacy in classical Greek literature | da |
| 1536 | Carte | BRO3.1 | James H. Brown | Imagining the Text | da |
| 1537 | Carte | LUK1.2 | Lukács, Edit Anna | Immovable truth divine knowledge and the bible at the university of Vienna (1384-1419) | da |
| 1538 | Articol | X-moo1.1 | Moonan, Lawrence | Impossibility and Peter Damian | da |
| 1539 | Carte | CIC1.12 | Marcus Tullius Cicero | In C. Verrem Actionis Secvunde | da |
| 1540 | Carte | PLE1.6 | Georgios Gemistos Plethon | În ce privinţe se deosebeşte Aristotel de Platon | da |
| 1541 | Carte | RAB2.1 | Rabanus Maurus | In honorem sanctae crucis | da |
| 1542 | Carte | AUG1.12 | Augustin | In Iohannis Evangelium Tractatus CXXIV | da |
| 1543 | Carte | CIC1.4 | Marcus Tullius Cicero | In L. Catilinam Orationes Quatuor | da |
| 1544 | Carte | CIC1.5 | Marcus Tullius Cicero | In L. Catilinam Orationes Quatuor | da |
| 1545 | Carte | CIC1.28 | Cicero, Marcus Tullius | In L. Catilinam Orationes Quatuor | da |
| 1546 | Carte | THE3.1 | Themistius; Ricardus Heinze (ed.) | In libros Aristotelis De anima paraphrasis | da |
| 1547 | Carte | PET1.2 | Petreu, Marta | In lumea tatilor | da |
| 1548 | Carte | CIC1.20 | Marcus Tullius Cicero | In M. Antonium Orationes Philippicae XIV | da |
| 1549 | Carte | THO1.11 | Thoma de Aquino | In Metaphisicam Aristotelis | da |
| 1550 | Carte | HEL2.1 | Heliodor | In Paulum Alexandrinum Commentarium | da |
| 1551 | Carte | OLY1.1 | Olympiodoros | In Platonis Gorgias Commentarium | da |
| 1552 | Carte | ALT1.1 | Iacobus de Altavillia | In primum librum Sententiarum. Ms. Erfurt, Ampoloniana CA 2° 118 | da |
| 1553 | Carte | WEI1.16 | Weijers, Olga | In search of the truth. A history of disputation techniques from antiquity to early modern times | da |
| 1554 | Carte | TRA1.1 | Tramontana, Alessandra | In Sicilia a scuola con Persio. Le lezioni dell'umanista Tommaso Schifaldo | da |
| 1555 | Carte | FIS1.1 | Fishacre, Richard | In Tertium Librum Sententiarum Teil 2: Dist. 23-40 | da |
| 1556 | Carte | ADA3.1 | Adamson, Peter | In the age of al-Fārābī: Arabic philosophy in the fourth/tenth century | nu |
| 1557 | Carte | ADA3.1#2 | Adamson, Peter | In the age of al-Fārābī: Arabic philosophy in the fourth/tenth century | da |
| 1558 | Carte | MAR1.1 | Marek, Christian | In the Land of a Thousand Gods: A History of Asia Minor in the Ancient World | da |
| 1559 | Carte | MUS1.4 | Musca, Vasile | Incercare asupra gandirii romanesti | da |
| 1560 | Carte | ~C.23 | Lancranjan, Ioan | Incercari de reabilitare a gandirii crestine medievale. Studiu de sinteza | da |
| 1561 | Articol | X-aba1.1 | Abaelard, Peter; ed. Geyer, Bernhard | Incipiunt Glossae secundum magistrum Petrum Abaelardum super Porphyrium | da |
| 1562 | Articol | X-wer1.1 | Werner, Hans-Joachim | Incommunicabilitas et Libertas | da |
| 1563 | Carte | ARI1.53.1 | Hermann Bonitz | Index Aristotelicus, vol I | da |
| 1564 | Carte | ARI1.53.2 | Hermann Bonitz | Index Aristotelicus, vol II | da |
| 1565 | Carte | GIL1.1 | Gilson, Etienne | Index scolastico-cartesien | da |
| 1566 | Carte | THO1.4 | | Indices auctoritatum omnique rerum notabilium occurrentium in S.T et in S.C.G | da |
| 1567 | Articol | X-tat1.2 | Tătaru-Cazaban, Bogdan | Individualitate şi infinit la Nicolaus Cusanus | da |
| 1568 | Carte | BAR7.1 | Barber, Kenneth F.; Garcia, Jorge J. E. (eds.) | Individuation and Identity in Early Modern Philosophy, | da |
| 1569 | Carte | GRA2.3 | Gracia, Jorge J. E. (ed.) | Individuation in Later Scholasticism and Counter-Reformation. 1150-1650 | da |
| 1570 | Carte | GRA2.1 | Gracia, Jorge J. E. | Individuation in Scholasticism | da |
