Classification
000 - Computer science, information & general works
500 - Natural sciences & mathematics
576 - Genetics & evolution
620 - Engineering & allied operations
11
700 - The arts; fine & decorative arts
8
333 - Economics of land & energy
7
380 - Commerce, communications & transportation
7
610 - Medicine & health
6
600 - Technology
5
140 - Specific philosophical schools
4
363 - Other social problems & services
4
551 - Geology, hydrology & meteorology
4
300 - Social sciences
3
414 - Phonology & phonetics
3
540 - Chemistry & allied sciences
3
580 - Plants (Botany)
3
581 - Specific topics in natural history
3
612 - Human physiology
3
900 - History & geography
3
330 - Economics
2
410 - Linguistics
1
530 - Physics
1