Classification
000 - Computer science, information & general works
100 - Philosophy & psychology
17
140 - Specific philosophical schools
170 - Ethics
8
900 - History & geography
8
200 - Religion
7
700 - The arts; fine & decorative arts
7
600 - Technology
6
800 - Literature & rhetoric
6
320 - Political science
5
120 - Epistemology, causation & humankind
4
330 - Economics
4
333 - Economics of land & energy
4
363 - Other social problems & services
4
400 - Language
4
581 - Specific topics in natural history
4
300 - Social sciences
3
301 - Sociology & anthropology
3
410 - Linguistics
3
576 - Genetics & evolution
3
340 - Law
2
380 - Commerce, communications & transportation
2
530 - Physics
2
370 - Education
1
500 - Natural sciences & mathematics
1
551 - Geology, hydrology & meteorology
1
590 - Animals (Zoology)
1
610 - Medicine & health
1
620 - Engineering & allied operations
1
720 - Architecture
1
780 - Music
1
791 - Public performances
1