| Code | Description | Items |
|---|---|---|
| 450 | Italian, Romanian, Rhaeto-Romantic | 56 |
| 451 | Italian writing system & phonology | 15 |
| 452 | Italian etymology | 33 |
| 453 | Italian dictionaries | 144 |
| 455 | Italian grammar | 38 |
| 457 | Italian language variations | 123 |
| 458 | Standard Italian usage | 95 |
| 459 | Romanian & Rhaeto-Romanic | 5 |