Classification
363 - Other social problems & services
4
500 - Natural sciences & mathematics
610 - Medicine & health
630 - Agriculture & related technologies
3
000 - Computer science, information & general works
2
551 - Geology, hydrology & meteorology
2
580 - Plants (Botany)
2
700 - The arts; fine & decorative arts
2
800 - Literature & rhetoric
2
600 - Technology
1
620 - Engineering & allied operations
1