400s Flashcards
400
400 Language
401
401 Philosophy & theory
402
402 Miscellany
403
403 Dictionaries & encyclopedias
404
404 Special topics
405
405 Serial publications
406
406 Organizations & management
407
407 Education, research, related topics
408
408 With respect to kinds of persons
409
409 Geographical & persons treatment
410
410 Linguistics
411
411 Writing systems
412
412 Etymology
413
413 Dictionaries
414
414 Phonology
415
415 Structural systems (Grammar)
416
416 Not assigned or no longer used
417
417 Dialectology & historical linguistics
418
418 Standard usage Applied linguistics
419
419 Verbal language not spoken or written
420
420 English & Old English
421
421 English writing system & phonology
422
422 English etymology
423
423 English dictionaries