Classification
100 - Philosophy & psychology
330 - Economics
380 - Commerce, communications & transportation
700 - The arts; fine & decorative arts
600 - Technology
4
900 - History & geography
4
320 - Political science
3
620 - Engineering & allied operations
3
300 - Social sciences
2
333 - Economics of land & energy
2
370 - Education
2
400 - Language
2
780 - Music
2
000 - Computer science, information & general works
1
140 - Specific philosophical schools
1
340 - Law
1
363 - Other social problems & services
1
410 - Linguistics
1
576 - Genetics & evolution
1
612 - Human physiology
1
630 - Agriculture & related technologies
1
658 - General management
1