Classification
380 - Commerce, communications & transportation
600 - Technology
6
700 - The arts; fine & decorative arts
6
330 - Economics
5
333 - Economics of land & energy
4
900 - History & geography
4
000 - Computer science, information & general works
3
140 - Specific philosophical schools
3
800 - Literature & rhetoric
3
304 - Factors affecting social behavior
2
320 - Political science
2
400 - Language
2
610 - Medicine & health
2
620 - Engineering & allied operations
2
301 - Sociology & anthropology
1
530 - Physics
1
580 - Plants (Botany)
1
657 - Accounting
1