Classification
170 - Ethics
330 - Economics
5
610 - Medicine & health
658 - General management
4
200 - Religion
2
000 - Computer science, information & general works
1
320 - Political science
1
333 - Economics of land & energy
1
370 - Education
1
530 - Physics
1
581 - Specific topics in natural history
1
600 - Technology
1
620 - Engineering & allied operations
1
700 - The arts; fine & decorative arts
1
900 - History & geography
1