Classification
170 - Ethics
140 - Specific philosophical schools
8
340 - Law
6
900 - History & geography
6
100 - Philosophy & psychology
5
300 - Social sciences
5
330 - Economics
5
700 - The arts; fine & decorative arts
5
333 - Economics of land & energy
4
600 - Technology
4
620 - Engineering & allied operations
4
610 - Medicine & health
3
000 - Computer science, information & general works
2
200 - Religion
2
320 - Political science
2
361 - Social problems & social welfare in general
2
363 - Other social problems & services
2
370 - Education
2
380 - Commerce, communications & transportation
2
576 - Genetics & evolution
2
580 - Plants (Botany)
2
630 - Agriculture & related technologies
2
720 - Architecture
2
800 - Literature & rhetoric
2
301 - Sociology & anthropology
1
360 - Social problems & services; associations
1
364 - Criminology
1
500 - Natural sciences & mathematics
1
658 - General management
1