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