Classification
610 - Medicine & health
700 - The arts; fine & decorative arts
720 - Architecture
333 - Economics of land & energy
8
363 - Other social problems & services
7
380 - Commerce, communications & transportation
7
330 - Economics
6
900 - History & geography
6
320 - Political science
5
600 - Technology
5
140 - Specific philosophical schools
4
551 - Geology, hydrology & meteorology
4
000 - Computer science, information & general works
3
370 - Education
3
576 - Genetics & evolution
3
620 - Engineering & allied operations
3
170 - Ethics
2
300 - Social sciences
2
340 - Law
2
580 - Plants (Botany)
2
630 - Agriculture & related technologies
2
800 - Literature & rhetoric
2
550 - Earth sciences
1