Classification
004 - Data processing & computer science
122
331 - Labor economics
58
000 - Computer science, information & general works
42
005 - Computer programming, programs & data
41
658 - General management
40
500 - Natural sciences & mathematics
38
384 - Communications; telecommunication
30
006 - Special computer methods
24
338 - Production
22
745 - Decorative arts
22
620 - Engineering & allied operations
21
330 - Economics
14
621 - Applied physics
8
001 - Knowledge
5
610 - Medicine & health
4
302 - Social interaction
3
629 - Other branches of engineering
3
670 - Manufacturing
3
696 - Utilities
3
300 - Social sciences
2
381 - Commerce
2
600 - Technology
2
153 - Mental processes & intelligence
1
303 - Social processes
1
304 - Factors affecting social behavior
1
307 - Communities
1
355 - Military science
1
363 - Other social problems & services
1
374 - Adult education
1
507 - Education, research & related topics
1
510 - Mathematics
1
519 - Probabilities & applied mathematics
1
616 - Diseases
1
630 - Agriculture & related technologies
1
643 - Housing & household equipment
1
681 - Precision instruments & other devices
1
720 - Architecture
1
794 - Indoor games of skill
1