Classification
000 - Computer science, information & general works
3
140 - Specific philosophical schools
1
320 - Political science
330 - Economics
333 - Economics of land & energy
6
360 - Social problems & services; associations
1
363 - Other social problems & services
370 - Education
2
380 - Commerce, communications & transportation
2
551 - Geology, hydrology & meteorology
2
580 - Plants (Botany)
3
581 - Specific topics in natural history
1
600 - Technology
8
610 - Medicine & health
1
620 - Engineering & allied operations
658 - General management
2
700 - The arts; fine & decorative arts
720 - Architecture
1
900 - History & geography