Classification
140 - Specific philosophical schools
170 - Ethics
200 - Religion
320 - Political science
100 - Philosophy & psychology
12
300 - Social sciences
6
333 - Economics of land & energy
5
340 - Law
4
700 - The arts; fine & decorative arts
4
000 - Computer science, information & general works
3
330 - Economics
3
363 - Other social problems & services
3
900 - History & geography
3
301 - Sociology & anthropology
2
581 - Specific topics in natural history
2
600 - Technology
2
120 - Epistemology, causation & humankind
1
370 - Education
1
400 - Language
1
410 - Linguistics
1
520 - Astronomy & allied sciences
1
530 - Physics
1
551 - Geology, hydrology & meteorology
1
610 - Medicine & health
1
620 - Engineering & allied operations
1
800 - Literature & rhetoric
1