Classification
380 - Commerce, communications & transportation
700 - The arts; fine & decorative arts
330 - Economics
5
600 - Technology
5
333 - Economics of land & energy
4
620 - Engineering & allied operations
3
900 - History & geography
3
363 - Other social problems & services
2
370 - Education
2
630 - Agriculture & related technologies
2
720 - Architecture
2
000 - Computer science, information & general works
1
140 - Specific philosophical schools
1
304 - Factors affecting social behavior
1
320 - Political science
1
400 - Language
1
500 - Natural sciences & mathematics
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1
657 - Accounting
1
658 - General management
1