Classification
140 - Specific philosophical schools
320 - Political science
361 - Social problems & social welfare in general
600 - Technology
2
620 - Engineering & allied operations
700 - The arts; fine & decorative arts
2
000 - Computer science, information & general works
1
170 - Ethics
1
330 - Economics
1
333 - Economics of land & energy
1
340 - Law
1
363 - Other social problems & services
1
610 - Medicine & health
1
900 - History & geography
1