Classification
320 - Political science
340 - Law
363 - Other social problems & services
380 - Commerce, communications & transportation
600 - Technology
8
330 - Economics
6
700 - The arts; fine & decorative arts
6
000 - Computer science, information & general works
5
620 - Engineering & allied operations
5
900 - History & geography
5
140 - Specific philosophical schools
4
576 - Genetics & evolution
4
333 - Economics of land & energy
3
500 - Natural sciences & mathematics
3
720 - Architecture
3
200 - Religion
2
300 - Social sciences
2
370 - Education
2
551 - Geology, hydrology & meteorology
2
610 - Medicine & health
2
350 - Public administration & military science
1
410 - Linguistics
1
580 - Plants (Botany)
1
630 - Agriculture & related technologies
1
657 - Accounting
1
658 - General management
1