Classification
000 - Computer science, information & general works
4
610 - Medicine & health
630 - Agriculture & related technologies
700 - The arts; fine & decorative arts
333 - Economics of land & energy
3
330 - Economics
2
600 - Technology
2
620 - Engineering & allied operations
2
140 - Specific philosophical schools
1
340 - Law
1
363 - Other social problems & services
1
540 - Chemistry & allied sciences
1