| 1541 | COS2.1#2 | Costa, Iacopo | Anonymi artium magistri Questiones super librum ethicorum Aristotelis | da |
| 1542 | COS2.2 | Costa, Iacopo (ed.) | Le 'questiones' di Radulfo Brito sull’ « Etica Nicomachea » | da |
| 1543 | COU1.1 | Couloubaritsis, Lambros | La Phisique d'Aristote | da |
| 1544 | COU1.2 | Couloubaritsis, Lambros | Histoire de la philosophie ancienne et medievale : figures illustres | da |
| 1545 | COU3.1 | Coulter, M. Dale | Per visibilia ad invisibilia. Theological method in Richard of St. Victor | da |
| 1546 | COU4.1 | Counet, Jean-Michel | Mathematiques et Dialectique chez Nicolas de Cuse | da |
| 1547 | COU4.2 | Counet, Jean-Michel (ed.) | A Question of Life and Death. Living and Dying in Medieval Philosophy | da |
| 1548 | COU2.1.1 | Courcelle, Pierre | Connais-toi toi-meme de Socrate a Saint Bernard vol I | nu |
| 1549 | COU2.1.2 | Courcelle, Pierre | Connais-toi toi-meme de Socrate a Saint Bernard vol II | nu |
| 1550 | COU2.1.3 | Courcelle, Pierre | Connais-toi toi-meme de Socrate a Saint Bernard vol III | nu |
