Classification
100 - Philosophy & psychology
140 - Specific philosophical schools
330 - Economics
576 - Genetics & evolution
300 - Social sciences
2
301 - Sociology & anthropology
2
320 - Political science
2
600 - Technology
2
900 - History & geography
2
000 - Computer science, information & general works
1
340 - Law
1
370 - Education
1
620 - Engineering & allied operations
1