Classification
000 - Computer science, information & general works
330 - Economics
530 - Physics
610 - Medicine & health
700 - The arts; fine & decorative arts
320 - Political science
2
333 - Economics of land & energy
2
600 - Technology
2
620 - Engineering & allied operations
2
170 - Ethics
1
370 - Education
1
414 - Phonology & phonetics
1
580 - Plants (Botany)
1
581 - Specific topics in natural history
1
900 - History & geography
1