Classification
900 - History & geography
300 - Social sciences
5
320 - Political science
5
410 - Linguistics
4
200 - Religion
3
330 - Economics
3
400 - Language
3
700 - The arts; fine & decorative arts
3
000 - Computer science, information & general works
2
301 - Sociology & anthropology
2
720 - Architecture
2
140 - Specific philosophical schools
1
340 - Law
1
380 - Commerce, communications & transportation
1
576 - Genetics & evolution
1
800 - Literature & rhetoric
1