Classification
100 - Philosophy & psychology
500 - Natural sciences & mathematics
780 - Music
700 - The arts; fine & decorative arts
4
333 - Economics of land & energy
2
370 - Education
2
400 - Language
2
140 - Specific philosophical schools
1
300 - Social sciences
1
301 - Sociology & anthropology
1
340 - Law
1
363 - Other social problems & services
1
576 - Genetics & evolution
1
610 - Medicine & health
1
900 - History & geography
1