Classification
000 - Computer science, information & general works
140 - Specific philosophical schools
330 - Economics
600 - Technology
620 - Engineering & allied operations
8
900 - History & geography
700 - The arts; fine & decorative arts
7
380 - Commerce, communications & transportation
6
333 - Economics of land & energy
3
363 - Other social problems & services
3
576 - Genetics & evolution
3
610 - Medicine & health
3
720 - Architecture
3
320 - Political science
2
400 - Language
2
630 - Agriculture & related technologies
2
658 - General management
2
300 - Social sciences
1
340 - Law
1
370 - Education
1
500 - Natural sciences & mathematics
1
540 - Chemistry & allied sciences
1
580 - Plants (Botany)
1