Classification
320 - Political science
330 - Economics
363 - Other social problems & services
600 - Technology
300 - Social sciences
46
340 - Law
10
100 - Philosophy & psychology
9
170 - Ethics
9
900 - History & geography
8
333 - Economics of land & energy
7
610 - Medicine & health
7
380 - Commerce, communications & transportation
6
620 - Engineering & allied operations
5
000 - Computer science, information & general works
4
370 - Education
4
140 - Specific philosophical schools
3
200 - Religion
3
658 - General management
3
700 - The arts; fine & decorative arts
3
576 - Genetics & evolution
2
650 - Management & auxiliary services
2
657 - Accounting
2
120 - Epistemology, causation & humankind
1
301 - Sociology & anthropology
1
360 - Social problems & services; associations
1
361 - Social problems & social welfare in general
1
364 - Criminology
1
581 - Specific topics in natural history
1