Classification
330 - Economics
7,050
340 - Law
170
320 - Political science
147
339 - Macroeconomics & related topics
90
332 - Financial economics
85
333 - Economics of land & energy
68
000 - Computer science, information & general works
47
700 - The arts; fine & decorative arts
43
610 - Medicine & health
42
380 - Commerce, communications & transportation
36
363 - Other social problems & services
30
600 - Technology
30
331 - Labor economics
27
658 - General management
27
343 - Military, tax, trade & industrial law
25
370 - Education
21
140 - Specific philosophical schools
20
336 - Public finance
20
900 - History & geography
19
304 - Factors affecting social behavior
16
338 - Production
15
630 - Agriculture & related technologies
15
551 - Geology, hydrology & meteorology
14
620 - Engineering & allied operations
14
368 - Insurance
12
300 - Social sciences
10
305 - Social groups
9
361 - Social problems & social welfare in general
8
500 - Natural sciences & mathematics
8
580 - Plants (Botany)
8
362 - Social welfare problems & services
7
100 - Philosophy & psychology
6
400 - Language
6
576 - Genetics & evolution
6
306 - Culture & institutions
5
581 - Specific topics in natural history
5
657 - Accounting
5
800 - Literature & rhetoric
5
158 - Applied psychology
4
170 - Ethics
3
200 - Religion
3
410 - Linguistics
3
612 - Human physiology
3
344 - Labor, social, education & cultural law
2
360 - Social problems & services; associations
2
381 - Commerce
2
510 - Mathematics
2
520 - Astronomy & allied sciences
2
530 - Physics
2
615 - Pharmacology & therapeutics
2
more ...