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