Classification
320 - Political science
330 - Economics
340 - Law
12
300 - Social sciences
6
630 - Agriculture & related technologies
5
363 - Other social problems & services
3
000 - Computer science, information & general works
2
333 - Economics of land & energy
2
600 - Technology
2
620 - Engineering & allied operations
2
900 - History & geography
2
361 - Social problems & social welfare in general
1
380 - Commerce, communications & transportation
1
540 - Chemistry & allied sciences
1
576 - Genetics & evolution
1
580 - Plants (Botany)
1
657 - Accounting
1
700 - The arts; fine & decorative arts
1