Classification
330 - Economics
360 - Social problems & services; associations
320 - Political science
5
361 - Social problems & social welfare in general
5
300 - Social sciences
4
610 - Medicine & health
4
363 - Other social problems & services
3
700 - The arts; fine & decorative arts
3
370 - Education
2
551 - Geology, hydrology & meteorology
2
600 - Technology
2
140 - Specific philosophical schools
1
333 - Economics of land & energy
1
350 - Public administration & military science
1
620 - Engineering & allied operations
1
780 - Music
1
900 - History & geography
1