Classification
500 - Natural sciences & mathematics
658 - General management
62
330 - Economics
54
300 - Social sciences
51
302 - Social interaction
47
670 - Manufacturing
45
620 - Engineering & allied operations
39
001 - Knowledge
27
003 - Systems
24
381 - Commerce
23
338 - Production
21
519 - Probabilities & applied mathematics
19
745 - Decorative arts
18
510 - Mathematics
10
000 - Computer science, information & general works
9
005 - Computer programming, programs & data
9
384 - Communications; telecommunication
9
331 - Labor economics
8
004 - Data processing & computer science
7
153 - Mental processes & intelligence
7
006 - Special computer methods
6
507 - Education, research & related topics
5
303 - Social processes
3
361 - Social problems & social welfare in general
2
371 - Schools & their activities; special education
2
610 - Medicine & health
2
615 - Pharmacology & therapeutics
2
020 - Library & information sciences
1
025 - Library operations
1
028 - Reading & use of other information media
1
174 - Occupational ethics
1
327 - International relations
1
332 - Financial economics
1
380 - Commerce, communications & transportation
1
506 - Organizations & management
1
511 - General principles of mathematics
1
530 - Physics
1
541 - Physical chemistry
1
571 - Physiology & related subjects
1
621 - Applied physics
1
623 - Military & nautical engineering
1
628 - Sanitary & municipal engineering
1
720 - Architecture
1
724 - Architecture from 1400
1
794 - Indoor games of skill
1
808 - Rhetoric & collections of literature
1