Classification
100 - Philosophy & psychology
2
200 - Religion
300 - Social sciences
320 - Political science
780 - Music
900 - History & geography
140 - Specific philosophical schools
1
330 - Economics
1
333 - Economics of land & energy
1
361 - Social problems & social welfare in general
1
400 - Language
1
410 - Linguistics
1
700 - The arts; fine & decorative arts
1
800 - Literature & rhetoric
1