Classification
140 - Specific philosophical schools
330 - Economics
363 - Other social problems & services
600 - Technology
620 - Engineering & allied operations
700 - The arts; fine & decorative arts
333 - Economics of land & energy
8
900 - History & geography
8
380 - Commerce, communications & transportation
6
000 - Computer science, information & general works
5
320 - Political science
4
610 - Medicine & health
3
630 - Agriculture & related technologies
3
720 - Architecture
3
300 - Social sciences
2
370 - Education
2
400 - Language
2
551 - Geology, hydrology & meteorology
2
576 - Genetics & evolution
2
658 - General management
2
100 - Philosophy & psychology
1
170 - Ethics
1
200 - Religion
1
340 - Law
1
361 - Social problems & social welfare in general
1
500 - Natural sciences & mathematics
1
581 - Specific topics in natural history
1
657 - Accounting
1
800 - Literature & rhetoric
1