Classification
658 - General management
330 - Economics
2,034
670 - Manufacturing
1,775
300 - Social sciences
1,493
302 - Social interaction
1,449
500 - Natural sciences & mathematics
1,437
338 - Production
649
381 - Commerce
371
331 - Labor economics
335
620 - Engineering & allied operations
224
650 - Management & auxiliary services
211
158 - Applied psychology
172
000 - Computer science, information & general works
149
384 - Communications; telecommunication
149
332 - Financial economics
142
153 - Mental processes & intelligence
130
745 - Decorative arts
100
380 - Commerce, communications & transportation
90
150 - Psychology
75
001 - Knowledge
66
600 - Technology
60
368 - Insurance
55
700 - The arts; fine & decorative arts
51
333 - Economics of land & energy
43
006 - Special computer methods
38
005 - Computer programming, programs & data
37
004 - Data processing & computer science
32
363 - Other social problems & services
30
304 - Factors affecting social behavior
25
659 - Advertising & public relations
21
900 - History & geography
20
170 - Ethics
17
580 - Plants (Botany)
17
610 - Medicine & health
16
374 - Adult education
15
510 - Mathematics
15
519 - Probabilities & applied mathematics
15
621 - Applied physics
14
140 - Specific philosophical schools
13
303 - Social processes
13
320 - Political science
13
576 - Genetics & evolution
12
629 - Other branches of engineering
11
741 - Drawing & drawings
9
800 - Literature & rhetoric
9
781 - General principles & musical forms
8
808 - Rhetoric & collections of literature
8
152 - Perception, movement, emotions & drives
7
720 - Architecture
7
551 - Geology, hydrology & meteorology
6
more ...