Classification
100 - Philosophy & psychology
576 - Genetics & evolution
700 - The arts; fine & decorative arts
900 - History & geography
4
000 - Computer science, information & general works
3
301 - Sociology & anthropology
3
333 - Economics of land & energy
3
370 - Education
3
600 - Technology
3
610 - Medicine & health
3
620 - Engineering & allied operations
3
140 - Specific philosophical schools
2
170 - Ethics
2
300 - Social sciences
2
320 - Political science
2
380 - Commerce, communications & transportation
2
540 - Chemistry & allied sciences
2
580 - Plants (Botany)
2
581 - Specific topics in natural history
2
200 - Religion
1
330 - Economics
1
340 - Law
1
363 - Other social problems & services
1
400 - Language
1
500 - Natural sciences & mathematics
1
530 - Physics
1
658 - General management
1
720 - Architecture
1