Classification
100 - Philosophy & psychology
363 - Other social problems & services
320 - Political science
5
700 - The arts; fine & decorative arts
5
333 - Economics of land & energy
4
300 - Social sciences
3
301 - Sociology & anthropology
3
340 - Law
3
900 - History & geography
3
140 - Specific philosophical schools
2
200 - Religion
2
330 - Economics
2
500 - Natural sciences & mathematics
2
600 - Technology
2
000 - Computer science, information & general works
1
120 - Epistemology, causation & humankind
1
170 - Ethics
1
297 - Islam, Babism & Bahai Faith
1
370 - Education
1
400 - Language
1
410 - Linguistics
1
540 - Chemistry & allied sciences
1
581 - Specific topics in natural history
1
610 - Medicine & health
1
620 - Engineering & allied operations
1
630 - Agriculture & related technologies
1
720 - Architecture
1
800 - Literature & rhetoric
1