Classification
100 - Philosophy & psychology
380 - Commerce, communications & transportation
700 - The arts; fine & decorative arts
6
300 - Social sciences
4
330 - Economics
4
370 - Education
4
400 - Language
4
600 - Technology
4
780 - Music
4
900 - History & geography
4
000 - Computer science, information & general works
3
320 - Political science
3
620 - Engineering & allied operations
3
333 - Economics of land & energy
2
410 - Linguistics
2
140 - Specific philosophical schools
1
340 - Law
1
540 - Chemistry & allied sciences
1
612 - Human physiology
1
630 - Agriculture & related technologies
1
658 - General management
1