Classification
140 - Specific philosophical schools
340 - Law
320 - Political science
5
333 - Economics of land & energy
5
600 - Technology
5
700 - The arts; fine & decorative arts
5
363 - Other social problems & services
4
500 - Natural sciences & mathematics
4
576 - Genetics & evolution
4
000 - Computer science, information & general works
3
330 - Economics
3
380 - Commerce, communications & transportation
3
620 - Engineering & allied operations
3
720 - Architecture
3
900 - History & geography
3
370 - Education
2
400 - Language
2
530 - Physics
2
100 - Philosophy & psychology
1
120 - Epistemology, causation & humankind
1
170 - Ethics
1
300 - Social sciences
1
410 - Linguistics
1