001 - Knowledge 100
402 - Miscellany 52
412 - Etymology 33
301 - Sociology & anthropology 17
006 - Special computer methods 16
153 - Mental processes & intelligence 16
401 - Philosophy & theory 16
410 - Linguistics 9
415 - Grammar 8
414 - Phonology & phonetics 6
004 - Data processing & computer science 5
152 - Perception, movement, emotions & drives 5
400 - Language 5
418 - Standard usage & applied linguistics 5
419 - Sign languages 4
005 - Computer programming, programs & data 3
149 - Other philosophical systems 3
155 - Differential & developmental psychology 3
158 - Applied psychology 3
300 - Social sciences 3
411 - Writing systems 3
511 - General principles of mathematics 3
612 - Human physiology 3
621 - Applied physics 3
801 - Philosophy & theory 3
428 - Standard English usage 2
519 - Probabilities & applied mathematics 2
704 - Special topics in fine & decorative arts 2
003 - Systems 1
016 - Bibliographies of works on specific subjects 1
070 - News media, journalism & publishing 1
121 - Epistemology 1
156 - Comparative psychology 1
160 - Logic 1
371 - Schools & their activities; special education 1
375 - Curricula 1
409 - Geographic & persons treatment 1
420 - English & Old English 1
433 - German dictionaries 1
438 - Standard German usage 1
443 - French dictionaries 1
471 - Classical Latin writing & phonology 1
495 - Languages of East & Southeast Asia 1
510 - Mathematics 1
574 - [Unassigned] 1
591 - Specific topics in natural history 1
620 - Engineering & allied operations 1
629 - Other branches of engineering 1
658 - General management 1
700 - The arts; fine & decorative arts 1
701 - Philosophy of fine & decorative arts 1
802 - Miscellany 1