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