Classification
800 - Literature & rhetoric
3
301 - Sociology & anthropology
2
320 - Political science
2
900 - History & geography
2
100 - Philosophy & psychology
1
140 - Specific philosophical schools
1
170 - Ethics
1
300 - Social sciences
1
330 - Economics
1
363 - Other social problems & services
1
600 - Technology
1
610 - Medicine & health
1
620 - Engineering & allied operations
1
630 - Agriculture & related technologies
1
700 - The arts; fine & decorative arts
1
780 - Music
1
791 - Public performances
1
860 - Spanish & Portuguese literatures
1