400	Language
401	Philosophy & theory
402	Miscellany
403	Dictionaries & encyclopedias
404	Special topics
405	Serial publications
406	Organizations & management
407	Education, research, related topics
408	With respect to kinds of persons
409	Geographical & persons treatment
410	Linguistics
411	Writing systems
412	Etymology
413	Dictionaries
414	Phonology
415	Structural systems (Grammar)
416	Not assigned or no longer used
417	Dialectology & historical linguistics
418	Standard usage Applied linguistics
419	Verbal language not spoken or written
420	English & Old English
421	English writing system & phonology
422	English etymology
423	English dictionaries
424	Not assigned or no longer used
425	English grammar
426	Not assigned or no longer used
427	English language variations
428	Standard English usage
429	Old English (Anglo-Saxon)
430	Germanic languages German
431	German writing system & phonology
432	German etymology
433	German dictionaries
434	Not assigned or no longer used
435	German grammar
436	Not assigned or no longer used
437	German language variations
438	Standard German usage
439	Other Germanic languages
440	Romance languages French
441	French writing system & phonology
442	French etymology
443	French dictionaries
444	Not assigned or no longer used
445	French grammar
446	Not assigned or no longer used
447	French language variations
448	Standard French usage
449	Provencal & Catalan
450	Italian, Romanian, Rhaeto-Romantic
451	Italian writing system & phonology
452	Italian etymology
453	Italian dictionaries
454	Not assigned or no longer used
455	Italian grammar
456	Not assigned or no longer used
457	Italian language variations
458	Standard Italian usage
459	Romanian & Rhaeto-Romanic
460	Spanish &Portugese languages
461	Spanish writing system & phonology
462	Spanish etymology
463	Spanish dictionaries
464	Not assigned or no longer used
465	Spanish grammar
466	Not assigned or no longer used
467	Spanish language variations
468	Standard Spanish usage
469	Portugese
470	Italic Latin
471	Classical Latin writing & phonology
472	Classical Latin etymology & phonology
473	Classical Latin dictionaries
474	Not assigned or no longer used
475	Classical Latin grammar
476	Not assigned or no longer used
477	Old, Postclassical, Vulgar Latin
478	Classical Latin usage
479	Other Italic languages
480	Hellenic languages Classical Greek
481	Classical Greek writing & phonology
482	Classical Greek etymology
483	Classical Greek dictionaries
484	Not assigned or no longer used
485	Classical Greek grammar
486	Not assigned or no longer used
487	Preclassical& postclassical Greek
488	Classical Greek usage
489	Other Hellenic languages
490	Other languages
491	East Indo-European & Celtic languages
492	Afro-Asiatic languages Semitic
493	Non-Semitic Afro-Asiatic languages
494	Ural-Altaic, Paleosiberian, Dravidian
495	Languages of East & Southeast Asia
496	African languages
497	North American native languages
498	South American native languages
499	Miscellaneous languages

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