Classification
658 - General management
35
621 - Applied physics
32
620 - Engineering & allied operations
30
745 - Decorative arts
30
331 - Labor economics
28
330 - Economics
26
005 - Computer programming, programs & data
25
004 - Data processing & computer science
24
000 - Computer science, information & general works
22
629 - Other branches of engineering
20
500 - Natural sciences & mathematics
19
006 - Special computer methods
17
381 - Commerce
12
300 - Social sciences
10
332 - Financial economics
10
306 - Culture & institutions
8
320 - Political science
8
600 - Technology
8
700 - The arts; fine & decorative arts
8
338 - Production
7
384 - Communications; telecommunication
6
770 - Photography, photographs & computer art
6
302 - Social interaction
5
339 - Macroeconomics & related topics
5
363 - Other social problems & services
5
520 - Astronomy & allied sciences
5
670 - Manufacturing
5
777 - [Unassigned]
5
305 - Social groups
4
370 - Education
4
570 - Life sciences; biology
4
646 - Sewing, clothing & personal living
4
650 - Management & auxiliary services
4
791 - Public performances
4
158 - Applied psychology
3
361 - Social problems & social welfare in general
3
610 - Medicine & health
3
641 - Food & drink
3
781 - General principles & musical forms
3
003 - Systems
2
140 - Specific philosophical schools
2
153 - Mental processes & intelligence
2
174 - Occupational ethics
2
301 - Sociology & anthropology
2
303 - Social processes
2
304 - Factors affecting social behavior
2
333 - Economics of land & energy
2
360 - Social problems & services; associations
2
551 - Geology, hydrology & meteorology
2
576 - Genetics & evolution
2
more ...