Classification
300 - Social sciences
320 - Political science
340 - Law
380 - Commerce, communications & transportation
330 - Economics
8
700 - The arts; fine & decorative arts
4
000 - Computer science, information & general works
3
100 - Philosophy & psychology
3
170 - Ethics
3
301 - Sociology & anthropology
3
370 - Education
3
600 - Technology
3
900 - History & geography
3
400 - Language
2
620 - Engineering & allied operations
2
658 - General management
2
140 - Specific philosophical schools
1
200 - Religion
1
333 - Economics of land & energy
1
363 - Other social problems & services
1
780 - Music
1
791 - Public performances
1