Classification
333 - Economics of land & energy
700 - The arts; fine & decorative arts
16
620 - Engineering & allied operations
15
600 - Technology
13
900 - History & geography
12
380 - Commerce, communications & transportation
9
363 - Other social problems & services
7
000 - Computer science, information & general works
6
330 - Economics
4
580 - Plants (Botany)
4
340 - Law
3
500 - Natural sciences & mathematics
3
530 - Physics
3
320 - Political science
2
540 - Chemistry & allied sciences
2
551 - Geology, hydrology & meteorology
2
576 - Genetics & evolution
2
610 - Medicine & health
2
630 - Agriculture & related technologies
2
140 - Specific philosophical schools
1
370 - Education
1
658 - General management
1