Classification
576 - Genetics & evolution
600 - Technology
620 - Engineering & allied operations
8
720 - Architecture
333 - Economics of land & energy
7
700 - The arts; fine & decorative arts
7
900 - History & geography
7
380 - Commerce, communications & transportation
6
330 - Economics
5
000 - Computer science, information & general works
4
363 - Other social problems & services
4
580 - Plants (Botany)
4
610 - Medicine & health
4
140 - Specific philosophical schools
3
800 - Literature & rhetoric
3
170 - Ethics
2
300 - Social sciences
2
340 - Law
2
630 - Agriculture & related technologies
2
500 - Natural sciences & mathematics
1
658 - General management
1