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420 English & Old English (Anglo-Saxon)
430 German and Related Languages
440 French & Related Romance Languages
450 Italian, Dalmatian, Romanian, Rhaetian, Sardinian, Corsican
- 450 Italian, Dalmatian, Romanian, Rhaetian, Sardinian, Corsican
- 451 Writing systems, phonology, phonetics of standard Italian
- 452 Etymology of standard Italian
- 453 Dictionaries of standard Italian
- 454 Not assigned or no longer used
- 455 Grammar of standard Italian
- 456 Not assigned or no longer used
- 457 Historical & geographic variations, modern nongeographic variations of Italian
- 458 Standard Italian usage (Prescriptive linguistics)
- 459 Romanian, Rhaetian, Sardinian, Corsican
460 Spanish, Portuguese, Galician
470 Latin & Related Italic Languages
480 Classical & Modern Greek Languages
