Classification
000 - Computer science, information & general works
800 - Literature & rhetoric
333 - Economics of land & energy
5
363 - Other social problems & services
5
600 - Technology
5
610 - Medicine & health
4
330 - Economics
3
700 - The arts; fine & decorative arts
3
370 - Education
2
530 - Physics
2
620 - Engineering & allied operations
2
320 - Political science
1
380 - Commerce, communications & transportation
1
500 - Natural sciences & mathematics
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1
580 - Plants (Botany)
1
657 - Accounting
1
658 - General management
1