Classification
363 - Other social problems & services
5
630 - Agriculture & related technologies
700 - The arts; fine & decorative arts
5
800 - Literature & rhetoric
580 - Plants (Botany)
4
610 - Medicine & health
4
000 - Computer science, information & general works
3
333 - Economics of land & energy
3
380 - Commerce, communications & transportation
3
551 - Geology, hydrology & meteorology
3
140 - Specific philosophical schools
2
170 - Ethics
2
300 - Social sciences
2
340 - Law
2
500 - Natural sciences & mathematics
2
576 - Genetics & evolution
2
600 - Technology
2
620 - Engineering & allied operations
2
720 - Architecture
2
900 - History & geography
2
320 - Political science
1
330 - Economics
1