Classification
330 - Economics
827
320 - Political science
375
332 - Financial economics
291
340 - Law
228
000 - Computer science, information & general works
94
658 - General management
73
700 - The arts; fine & decorative arts
54
338 - Production
52
600 - Technology
51
333 - Economics of land & energy
49
900 - History & geography
41
363 - Other social problems & services
25
380 - Commerce, communications & transportation
25
620 - Engineering & allied operations
24
610 - Medicine & health
20
500 - Natural sciences & mathematics
18
300 - Social sciences
17
580 - Plants (Botany)
17
381 - Commerce
15
576 - Genetics & evolution
15
630 - Agriculture & related technologies
14
820 - English & Old English literatures
14
551 - Geology, hydrology & meteorology
13
140 - Specific philosophical schools
12
370 - Education
9
400 - Language
7
153 - Mental processes & intelligence
6
339 - Macroeconomics & related topics
6
581 - Specific topics in natural history
6
800 - Literature & rhetoric
6
302 - Social interaction
5
530 - Physics
5
670 - Manufacturing
5
001 - Knowledge
4
331 - Labor economics
4
368 - Insurance
4
540 - Chemistry & allied sciences
4
657 - Accounting
4
720 - Architecture
4
780 - Music
4
100 - Philosophy & psychology
3
170 - Ethics
3
414 - Phonology & phonetics
3
650 - Management & auxiliary services
3
770 - Photography, photographs & computer art
3
297 - Islam, Babism & Bahai Faith
2
304 - Factors affecting social behavior
2
374 - Adult education
2
510 - Mathematics
2
659 - Advertising & public relations
2
more ...