Classification
001 - Knowledge
1
004 - Data processing & computer science
2
005 - Computer programming, programs & data
1
153 - Mental processes & intelligence
2
158 - Applied psychology
1
300 - Social sciences
6
302 - Social interaction
2
304 - Factors affecting social behavior
1
330 - Economics
11
331 - Labor economics
2
332 - Financial economics
2
338 - Production
343 - Military, tax, trade & industrial law
2
364 - Criminology
1
371 - Schools & their activities; special education
1
381 - Commerce
4
384 - Communications; telecommunication
1
500 - Natural sciences & mathematics
2
629 - Other branches of engineering
1
650 - Management & auxiliary services
3
658 - General management
19
794 - Indoor games of skill
1