Classification
576 - Genetics & evolution
600 - Technology
6
000 - Computer science, information & general works
5
333 - Economics of land & energy
4
330 - Economics
3
700 - The arts; fine & decorative arts
3
720 - Architecture
3
363 - Other social problems & services
2
380 - Commerce, communications & transportation
2
400 - Language
2
620 - Engineering & allied operations
2
658 - General management
2
140 - Specific philosophical schools
1
370 - Education
1
500 - Natural sciences & mathematics
1
580 - Plants (Botany)
1
610 - Medicine & health
1
900 - History & geography
1