Classification
330 - Economics
700 - The arts; fine & decorative arts
4
600 - Technology
3
000 - Computer science, information & general works
2
320 - Political science
2
333 - Economics of land & energy
2
900 - History & geography
2
363 - Other social problems & services
1
370 - Education
1
380 - Commerce, communications & transportation
1
400 - Language
1
414 - Phonology & phonetics
1
500 - Natural sciences & mathematics
1
576 - Genetics & evolution
1
580 - Plants (Botany)
1
610 - Medicine & health
1
620 - Engineering & allied operations
1
658 - General management
1