Classification
400 - Language
600 - Technology
700 - The arts; fine & decorative arts
12
620 - Engineering & allied operations
8
330 - Economics
5
410 - Linguistics
5
630 - Agriculture & related technologies
5
900 - History & geography
5
140 - Specific philosophical schools
4
380 - Commerce, communications & transportation
4
610 - Medicine & health
4
000 - Computer science, information & general works
3
100 - Philosophy & psychology
3
300 - Social sciences
3
320 - Political science
3
304 - Factors affecting social behavior
2
333 - Economics of land & energy
2
370 - Education
2
780 - Music
2
800 - Literature & rhetoric
2
340 - Law
1
658 - General management
1