Classification
330 - Economics
320 - Political science
2,200
900 - History & geography
170
340 - Law
143
300 - Social sciences
124
332 - Financial economics
106
658 - General management
57
700 - The arts; fine & decorative arts
47
333 - Economics of land & energy
39
576 - Genetics & evolution
34
000 - Computer science, information & general works
27
338 - Production
22
368 - Insurance
18
600 - Technology
18
380 - Commerce, communications & transportation
17
500 - Natural sciences & mathematics
13
363 - Other social problems & services
12
551 - Geology, hydrology & meteorology
12
630 - Agriculture & related technologies
12
381 - Commerce
10
800 - Literature & rhetoric
8
297 - Islam, Babism & Bahai Faith
7
581 - Specific topics in natural history
7
610 - Medicine & health
7
140 - Specific philosophical schools
6
304 - Factors affecting social behavior
6
620 - Engineering & allied operations
6
370 - Education
5
670 - Manufacturing
5
100 - Philosophy & psychology
4
200 - Religion
4
302 - Social interaction
4
339 - Macroeconomics & related topics
4
170 - Ethics
3
336 - Public finance
3
350 - Public administration & military science
3
400 - Language
3
580 - Plants (Botany)
3
657 - Accounting
3
301 - Sociology & anthropology
2
331 - Labor economics
2
361 - Social problems & social welfare in general
2
004 - Data processing & computer science
1
005 - Computer programming, programs & data
1
174 - Occupational ethics
1
303 - Social processes
1
364 - Criminology
1
384 - Communications; telecommunication
1
410 - Linguistics
1
414 - Phonology & phonetics
1
more ...