Classification
000 - Computer science, information & general works
6
140 - Specific philosophical schools
5
300 - Social sciences
3
320 - Political science
3
330 - Economics
1
333 - Economics of land & energy
5
360 - Social problems & services; associations
1
363 - Other social problems & services
9
380 - Commerce, communications & transportation
3
414 - Phonology & phonetics
3
500 - Natural sciences & mathematics
3
540 - Chemistry & allied sciences
4
551 - Geology, hydrology & meteorology
576 - Genetics & evolution
4
580 - Plants (Botany)
5
581 - Specific topics in natural history
3
600 - Technology
8
610 - Medicine & health
4
612 - Human physiology
3
620 - Engineering & allied operations
630 - Agriculture & related technologies
1
700 - The arts; fine & decorative arts
900 - History & geography
6