Classification
000 - Computer science, information & general works
3
140 - Specific philosophical schools
2
170 - Ethics
174 - Occupational ethics
1
330 - Economics
3
333 - Economics of land & energy
1
363 - Other social problems & services
1
500 - Natural sciences & mathematics
1
540 - Chemistry & allied sciences
1
580 - Plants (Botany)
2
600 - Technology
4
610 - Medicine & health
4
620 - Engineering & allied operations
3
700 - The arts; fine & decorative arts
1
720 - Architecture
1
900 - History & geography
1