Classification
170 - Ethics
800 - Literature & rhetoric
900 - History & geography
100 - Philosophy & psychology
16
140 - Specific philosophical schools
14
200 - Religion
12
410 - Linguistics
11
320 - Political science
7
700 - The arts; fine & decorative arts
6
300 - Social sciences
3
333 - Economics of land & energy
3
363 - Other social problems & services
3
000 - Computer science, information & general works
2
120 - Epistemology, causation & humankind
2
340 - Law
2
380 - Commerce, communications & transportation
2
576 - Genetics & evolution
2
580 - Plants (Botany)
2
600 - Technology
2
610 - Medicine & health
2
620 - Engineering & allied operations
2
630 - Agriculture & related technologies
2
720 - Architecture
2
791 - Public performances
2
880 - Hellenic literatures; classical Greek
2
330 - Economics
1
370 - Education
1
400 - Language
1
780 - Music
1
891 - East Indo-European & Celtic literatures
1