Classification
100 - Philosophy & psychology
330 - Economics
333 - Economics of land & energy
363 - Other social problems & services
3
700 - The arts; fine & decorative arts
3
200 - Religion
2
300 - Social sciences
2
301 - Sociology & anthropology
2
600 - Technology
2
620 - Engineering & allied operations
2
630 - Agriculture & related technologies
2
000 - Computer science, information & general works
1
120 - Epistemology, causation & humankind
1
140 - Specific philosophical schools
1
170 - Ethics
1
320 - Political science
1
400 - Language
1
410 - Linguistics
1
540 - Chemistry & allied sciences
1
610 - Medicine & health
1
800 - Literature & rhetoric
1
900 - History & geography
1