Classification
340 - Law
580 - Plants (Botany)
600 - Technology
10
620 - Engineering & allied operations
900 - History & geography
8
700 - The arts; fine & decorative arts
7
333 - Economics of land & energy
6
380 - Commerce, communications & transportation
5
630 - Agriculture & related technologies
5
363 - Other social problems & services
4
140 - Specific philosophical schools
3
610 - Medicine & health
3
170 - Ethics
2
300 - Social sciences
2
330 - Economics
2
500 - Natural sciences & mathematics
2
576 - Genetics & evolution
2
720 - Architecture
2
800 - Literature & rhetoric
2
320 - Political science
1
400 - Language
1
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
1