Classification
100 - Philosophy & psychology
170 - Ethics
200 - Religion
333 - Economics of land & energy
140 - Specific philosophical schools
6
300 - Social sciences
4
320 - Political science
4
330 - Economics
4
363 - Other social problems & services
4
700 - The arts; fine & decorative arts
4
610 - Medicine & health
3
000 - Computer science, information & general works
2
370 - Education
2
600 - Technology
2
301 - Sociology & anthropology
1
340 - Law
1
551 - Geology, hydrology & meteorology
1
581 - Specific topics in natural history
1
620 - Engineering & allied operations
1
630 - Agriculture & related technologies
1
900 - History & geography
1