Classification
340 - Law
81
330 - Economics
41
320 - Political science
18
380 - Commerce, communications & transportation
12
363 - Other social problems & services
11
345 - Criminal law
10
140 - Specific philosophical schools
8
300 - Social sciences
7
304 - Factors affecting social behavior
5
333 - Economics of land & energy
5
346 - Private law
4
350 - Public administration & military science
4
364 - Criminology
4
658 - General management
4
338 - Production
3
342 - Constitutional & administrative law
3
347 - Civil procedure & courts
3
600 - Technology
3
700 - The arts; fine & decorative arts
3
900 - History & geography
3
100 - Philosophy & psychology
2
302 - Social interaction
2
306 - Culture & institutions
2
331 - Labor economics
2
332 - Financial economics
2
337 - International economics
2
344 - Labor, social, education & cultural law
2
349 - Law of specific jurisdictions & areas
2
500 - Natural sciences & mathematics
2
630 - Agriculture & related technologies
2
170 - Ethics
1
179 - Other ethical norms
1
200 - Religion
1
301 - Sociology & anthropology
1
305 - Social groups
1
530 - Physics
1
551 - Geology, hydrology & meteorology
1
570 - Life sciences; biology
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1
610 - Medicine & health
1
620 - Engineering & allied operations
1
690 - Buildings
1