Classification
140 - Specific philosophical schools
170 - Ethics
320 - Political science
600 - Technology
100 - Philosophy & psychology
5
620 - Engineering & allied operations
5
700 - The arts; fine & decorative arts
4
340 - Law
3
900 - History & geography
3
120 - Epistemology, causation & humankind
2
200 - Religion
2
300 - Social sciences
2
301 - Sociology & anthropology
2
330 - Economics
2
581 - Specific topics in natural history
2
630 - Agriculture & related technologies
2
000 - Computer science, information & general works
1
304 - Factors affecting social behavior
1
333 - Economics of land & energy
1
361 - Social problems & social welfare in general
1
363 - Other social problems & services
1
370 - Education
1
530 - Physics
1
576 - Genetics & evolution
1
580 - Plants (Botany)
1
610 - Medicine & health
1
658 - General management
1