Classification
100 - Philosophy & psychology
320 - Political science
330 - Economics
380 - Commerce, communications & transportation
300 - Social sciences
5
900 - History & geography
4
400 - Language
3
600 - Technology
3
620 - Engineering & allied operations
3
780 - Music
3
340 - Law
2
363 - Other social problems & services
2
370 - Education
2
410 - Linguistics
2
657 - Accounting
2
658 - General management
2
700 - The arts; fine & decorative arts
2
000 - Computer science, information & general works
1
140 - Specific philosophical schools
1
170 - Ethics
1
336 - Public finance
1
551 - Geology, hydrology & meteorology
1
630 - Agriculture & related technologies
1
800 - Literature & rhetoric
1