Classification
300 - Social sciences
330 - Economics
1,593
658 - General management
1,491
302 - Social interaction
1,431
670 - Manufacturing
1,393
500 - Natural sciences & mathematics
1,355
338 - Production
351
381 - Commerce
221
331 - Labor economics
199
320 - Political science
131
650 - Management & auxiliary services
117
158 - Applied psychology
110
384 - Communications; telecommunication
104
153 - Mental processes & intelligence
88
380 - Commerce, communications & transportation
68
620 - Engineering & allied operations
65
332 - Financial economics
54
745 - Decorative arts
39
150 - Psychology
37
001 - Knowledge
31
368 - Insurance
28
900 - History & geography
26
000 - Computer science, information & general works
22
700 - The arts; fine & decorative arts
19
600 - Technology
18
333 - Economics of land & energy
15
340 - Law
15
006 - Special computer methods
14
170 - Ethics
13
510 - Mathematics
13
610 - Medicine & health
13
100 - Philosophy & psychology
12
630 - Agriculture & related technologies
12
659 - Advertising & public relations
11
301 - Sociology & anthropology
10
140 - Specific philosophical schools
9
005 - Computer programming, programs & data
8
363 - Other social problems & services
8
808 - Rhetoric & collections of literature
8
304 - Factors affecting social behavior
7
370 - Education
7
519 - Probabilities & applied mathematics
7
152 - Perception, movement, emotions & drives
6
374 - Adult education
6
581 - Specific topics in natural history
6
004 - Data processing & computer science
5
155 - Differential & developmental psychology
4
303 - Social processes
4
362 - Social welfare problems & services
4
800 - Literature & rhetoric
4
more ...