Classification
000 - Computer science, information & general works
100 - Philosophy & psychology
140 - Specific philosophical schools
600 - Technology
13
700 - The arts; fine & decorative arts
11
900 - History & geography
10
800 - Literature & rhetoric
9
170 - Ethics
8
200 - Religion
8
363 - Other social problems & services
6
370 - Education
6
380 - Commerce, communications & transportation
6
120 - Epistemology, causation & humankind
5
300 - Social sciences
5
320 - Political science
5
330 - Economics
5
333 - Economics of land & energy
5
400 - Language
5
301 - Sociology & anthropology
4
410 - Linguistics
4
576 - Genetics & evolution
4
581 - Specific topics in natural history
4
340 - Law
2
530 - Physics
2
610 - Medicine & health
2
620 - Engineering & allied operations
2
720 - Architecture
2
160 - Logic
1
302 - Social interaction
1
500 - Natural sciences & mathematics
1
551 - Geology, hydrology & meteorology
1
590 - Animals (Zoology)
1
612 - Human physiology
1
770 - Photography, photographs & computer art
1
780 - Music
1
791 - Public performances
1