400

Language

450

Italian, Romanian, Rhaeto-Romanic

401

Philosophy and theory

451

Italian writing system and phonology

402

Miscellany

452

Italian etymology

403

Dictionaries and encyclopedias

453

Italian dictionaries

404

Special topics

454

405

Serial publications

455

Italian grammar

406

Organizations and management

456

407

Education, research, related topics

457

Italian language variations

408

With respect to kinds of persons

458

Standard Italian usage

409

Geographical and persons treatment

459

Romanian and Rhaeto-Romanic

410

Linguistics

460

Spanish and Portuguese languages

411

Writing systems

461

Spanish writing system and phonology

412

Etymology

462

Spanish etymology

413

Dictionaries

463

Spanish dictionaries

414

Phonology

464

415

Structural systems (Grammar)

465

Spanish grammar

416

466

417

Dialectology and historical linguistics

467

Spanish language variations

418

Standard usage, applied linguistics

468

Standard Spanish usage

419

Verbal language not spoken or written

469

Portuguese

420

English and Old English

470

Italic languages, Latin

421

English writing system and phonology

471

Classical Latin writing and phonology

422

English etymology

472

Classical Latin etymology

423

English dictionaries

473

Classical Latin dictionaries

424

474

425

English grammar

475

Classical Latin grammar

426

476

427

English language variations

477

Old, Postclassical, Vulgar Latin

428

Standard English usage

478

Classical Latin usage

429

Old English (Anglo-Saxon)

479

Other Italic languages

430

Germanic languages, German

480

Hellenic languages, Classical Greek

431

German writing system and phonology

481

Classical Greek writing and phonology

432

German etymology

482

Classical Greek etymology

433

German dictionaries

483

Classical Greek dictionaries

434

484

435

German grammar

485

Classical Greek grammar

436

486

437

German language variations

487

Preclassical and postclassical Greek

438

Standard German usage

488

Classical Greek usage

439

Other Germanic languages

489

Other Hellenic languages

440

Romance languages, French

490

Other languages

441

French writing system and phonology

491

East Indo-European and Celtic languages

442

French etymology

492

Afro-Asiatic languages, Semitic

443

French dictionaries

493

Non-Semitic Afro-Asiatic languages

444

494

Ural-Altaic, Paleosiberian, Dravidian

445

French grammar

495

Languages of East and Southeast Asia

446

496

African languages

447

French language variations

497

North American native languages

448

Standard French usage

498

South American native languages

449

Provençal and Catalan

499

Miscellaneous languages