Classification
000 - Computer science, information & general works
6
540 - Chemistry & allied sciences
600 - Technology
6
620 - Engineering & allied operations
5
900 - History & geography
5
700 - The arts; fine & decorative arts
4
333 - Economics of land & energy
3
500 - Natural sciences & mathematics
2
330 - Economics
1
400 - Language
1
576 - Genetics & evolution
1