Classification
320 - Political science
330 - Economics
6
658 - General management
700 - The arts; fine & decorative arts
900 - History & geography
333 - Economics of land & energy
4
600 - Technology
4
620 - Engineering & allied operations
4
370 - Education
3
000 - Computer science, information & general works
2
100 - Philosophy & psychology
2
140 - Specific philosophical schools
2
300 - Social sciences
2
340 - Law
2
363 - Other social problems & services
2
380 - Commerce, communications & transportation
2
400 - Language
2
580 - Plants (Botany)
2
720 - Architecture
2
410 - Linguistics
1
610 - Medicine & health
1
630 - Agriculture & related technologies
1
657 - Accounting
1
770 - Photography, photographs & computer art
1
780 - Music
1