Classification
363 - Other social problems & services
410 - Linguistics
800 - Literature & rhetoric
330 - Economics
5
333 - Economics of land & energy
4
000 - Computer science, information & general works
3
100 - Philosophy & psychology
3
320 - Political science
3
576 - Genetics & evolution
3
700 - The arts; fine & decorative arts
3
140 - Specific philosophical schools
2
200 - Religion
2
380 - Commerce, communications & transportation
2
400 - Language
2
581 - Specific topics in natural history
2
900 - History & geography
2
120 - Epistemology, causation & humankind
1
300 - Social sciences
1
301 - Sociology & anthropology
1
398 - Folklore
1
500 - Natural sciences & mathematics
1
551 - Geology, hydrology & meteorology
1
580 - Plants (Botany)
1
600 - Technology
1
610 - Medicine & health
1
620 - Engineering & allied operations
1