Classification
364 - Criminology
340 - Law
131
331 - Labor economics
122
005 - Computer programming, programs & data
104
500 - Natural sciences & mathematics
99
300 - Social sciences
92
363 - Other social problems & services
70
361 - Social problems & social welfare in general
55
330 - Economics
53
360 - Social problems & services; associations
52
320 - Political science
43
658 - General management
34
900 - History & geography
28
000 - Computer science, information & general works
27
338 - Production
24
100 - Philosophy & psychology
17
301 - Sociology & anthropology
15
600 - Technology
14
620 - Engineering & allied operations
14
610 - Medicine & health
13
001 - Knowledge
12
384 - Communications; telecommunication
12
140 - Specific philosophical schools
10
700 - The arts; fine & decorative arts
10
333 - Economics of land & energy
8
370 - Education
8
006 - Special computer methods
7
302 - Social interaction
6
621 - Applied physics
5
170 - Ethics
4
200 - Religion
4
304 - Factors affecting social behavior
4
345 - Criminal law
4
355 - Military science
4
380 - Commerce, communications & transportation
4
004 - Data processing & computer science
3
303 - Social processes
3
332 - Financial economics
3
381 - Commerce
3
576 - Genetics & evolution
3
630 - Agriculture & related technologies
3
800 - Literature & rhetoric
3
368 - Insurance
2
374 - Adult education
2
650 - Management & auxiliary services
2
670 - Manufacturing
2
720 - Architecture
2
745 - Decorative arts
2
025 - Library operations
1
150 - Psychology
1
more ...