Classification
000 - Computer science, information & general works
140 - Specific philosophical schools
500 - Natural sciences & mathematics
333 - Economics of land & energy
6
540 - Chemistry & allied sciences
6
700 - The arts; fine & decorative arts
6
380 - Commerce, communications & transportation
5
576 - Genetics & evolution
5
610 - Medicine & health
5
363 - Other social problems & services
4
620 - Engineering & allied operations
4
300 - Social sciences
3
414 - Phonology & phonetics
3
551 - Geology, hydrology & meteorology
3
580 - Plants (Botany)
3
581 - Specific topics in natural history
3
612 - Human physiology
3
170 - Ethics
2
100 - Philosophy & psychology
1
120 - Epistemology, causation & humankind
1
340 - Law
1
400 - Language
1
530 - Physics
1
600 - Technology
1