Classification
330 - Economics
7,831
320 - Political science
226
340 - Law
194
339 - Macroeconomics & related topics
92
332 - Financial economics
85
333 - Economics of land & energy
69
000 - Computer science, information & general works
48
610 - Medicine & health
47
700 - The arts; fine & decorative arts
46
380 - Commerce, communications & transportation
41
900 - History & geography
33
363 - Other social problems & services
31
600 - Technology
31
140 - Specific philosophical schools
27
331 - Labor economics
27
658 - General management
27
343 - Military, tax, trade & industrial law
25
370 - Education
24
336 - Public finance
21
300 - Social sciences
19
304 - Factors affecting social behavior
19
361 - Social problems & social welfare in general
19
338 - Production
16
620 - Engineering & allied operations
15
630 - Agriculture & related technologies
15
551 - Geology, hydrology & meteorology
14
100 - Philosophy & psychology
12
368 - Insurance
12
305 - Social groups
9
576 - Genetics & evolution
9
500 - Natural sciences & mathematics
8
580 - Plants (Botany)
8
362 - Social welfare problems & services
7
400 - Language
6
306 - Culture & institutions
5
581 - Specific topics in natural history
5
657 - Accounting
5
800 - Literature & rhetoric
5
158 - Applied psychology
4
360 - Social problems & services; associations
4
170 - Ethics
3
200 - Religion
3
301 - Sociology & anthropology
3
410 - Linguistics
3
612 - Human physiology
3
770 - Photography, photographs & computer art
3
780 - Music
3
344 - Labor, social, education & cultural law
2
364 - Criminology
2
381 - Commerce
2
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