Classification
658 - General management
331 - Labor economics
1,257
330 - Economics
523
338 - Production
308
004 - Data processing & computer science
302
000 - Computer science, information & general works
271
302 - Social interaction
256
005 - Computer programming, programs & data
222
500 - Natural sciences & mathematics
217
381 - Commerce
215
006 - Special computer methods
199
384 - Communications; telecommunication
174
620 - Engineering & allied operations
127
374 - Adult education
84
300 - Social sciences
76
600 - Technology
65
650 - Management & auxiliary services
63
670 - Manufacturing
59
700 - The arts; fine & decorative arts
54
380 - Commerce, communications & transportation
45
745 - Decorative arts
42
333 - Economics of land & energy
35
363 - Other social problems & services
33
659 - Advertising & public relations
30
610 - Medicine & health
28
140 - Specific philosophical schools
20
158 - Applied psychology
19
364 - Criminology
19
900 - History & geography
18
576 - Genetics & evolution
16
153 - Mental processes & intelligence
14
303 - Social processes
13
320 - Political science
13
370 - Education
13
368 - Insurance
11
580 - Plants (Botany)
10
630 - Agriculture & related technologies
10
551 - Geology, hydrology & meteorology
9
621 - Applied physics
9
800 - Literature & rhetoric
8
001 - Knowledge
7
025 - Library operations
7
510 - Mathematics
7
332 - Financial economics
5
657 - Accounting
5
720 - Architecture
5
400 - Language
4
519 - Probabilities & applied mathematics
4
530 - Physics
4
297 - Islam, Babism & Bahai Faith
3
more ...