Classification
330 - Economics
333 - Economics of land & energy
576 - Genetics & evolution
600 - Technology
620 - Engineering & allied operations
5
700 - The arts; fine & decorative arts
720 - Architecture
000 - Computer science, information & general works
4
900 - History & geography
4
580 - Plants (Botany)
2
610 - Medicine & health
2
380 - Commerce, communications & transportation
1
400 - Language
1
414 - Phonology & phonetics
1
800 - Literature & rhetoric
1