Classification
005 - Computer programming, programs & data
49
500 - Natural sciences & mathematics
20
331 - Labor economics
15
658 - General management
15
620 - Engineering & allied operations
11
004 - Data processing & computer science
7
384 - Communications; telecommunication
7
006 - Special computer methods
5
330 - Economics
5
745 - Decorative arts
5
153 - Mental processes & intelligence
3
000 - Computer science, information & general works
2
025 - Library operations
2
300 - Social sciences
2
302 - Social interaction
2
381 - Commerce
2
510 - Mathematics
2
519 - Probabilities & applied mathematics
2
621 - Applied physics
2
629 - Other branches of engineering
2
781 - General principles & musical forms
2
791 - Public performances
2
794 - Indoor games of skill
2
011 - Bibliographies
1
305 - Social groups
1
332 - Financial economics
1
338 - Production
1
346 - Private law
1
368 - Insurance
1
428 - Standard English usage
1
600 - Technology
1
641 - Food & drink
1
650 - Management & auxiliary services
1
681 - Precision instruments & other devices
1
790 - Recreational & performing arts
1
808 - Rhetoric & collections of literature
1