Classification
100 - Philosophy & psychology
320 - Political science
340 - Law
370 - Education
300 - Social sciences
4
330 - Economics
4
900 - History & geography
4
140 - Specific philosophical schools
3
600 - Technology
3
700 - The arts; fine & decorative arts
3
301 - Sociology & anthropology
2
333 - Economics of land & energy
2
400 - Language
2
620 - Engineering & allied operations
2
658 - General management
2
170 - Ethics
1
304 - Factors affecting social behavior
1
380 - Commerce, communications & transportation
1
576 - Genetics & evolution
1
770 - Photography, photographs & computer art
1
780 - Music
1