Classification
005 - Computer programming, programs & data
236
004 - Data processing & computer science
125
658 - General management
111
500 - Natural sciences & mathematics
68
006 - Special computer methods
62
331 - Labor economics
57
330 - Economics
35
745 - Decorative arts
28
620 - Engineering & allied operations
23
384 - Communications; telecommunication
22
338 - Production
20
629 - Other branches of engineering
18
000 - Computer science, information & general works
16
381 - Commerce
14
650 - Management & auxiliary services
12
510 - Mathematics
11
300 - Social sciences
6
332 - Financial economics
6
374 - Adult education
6
621 - Applied physics
6
794 - Indoor games of skill
6
364 - Criminology
5
519 - Probabilities & applied mathematics
5
302 - Social interaction
4
001 - Knowledge
3
158 - Applied psychology
3
380 - Commerce, communications & transportation
3
610 - Medicine & health
3
770 - Photography, photographs & computer art
3
153 - Mental processes & intelligence
2
600 - Technology
2
616 - Diseases
2
651 - Office services
2
741 - Drawing & drawings
2
790 - Recreational & performing arts
2
155 - Differential & developmental psychology
1
301 - Sociology & anthropology
1
307 - Communities
1
336 - Public finance
1
339 - Macroeconomics & related topics
1
342 - Constitutional & administrative law
1
355 - Military science
1
363 - Other social problems & services
1
371 - Schools & their activities; special education
1
372 - Elementary education
1
512 - Algebra
1
518 - Numerical analysis
1
624 - Civil engineering
1
659 - Advertising & public relations
1
670 - Manufacturing
1
more ...