Classification
000 - Computer science, information & general works
6
340 - Law
380 - Commerce, communications & transportation
6
530 - Physics
333 - Economics of land & energy
5
700 - The arts; fine & decorative arts
4
330 - Economics
3
500 - Natural sciences & mathematics
3
363 - Other social problems & services
2
576 - Genetics & evolution
2
658 - General management
2
320 - Political science
1
414 - Phonology & phonetics
1
580 - Plants (Botany)
1
600 - Technology
1
620 - Engineering & allied operations
1