Classification
170 - Ethics
580 - Plants (Botany)
610 - Medicine & health
13
140 - Specific philosophical schools
9
600 - Technology
7
700 - The arts; fine & decorative arts
7
340 - Law
6
100 - Philosophy & psychology
5
363 - Other social problems & services
4
620 - Engineering & allied operations
4
120 - Epistemology, causation & humankind
3
300 - Social sciences
3
333 - Economics of land & energy
3
380 - Commerce, communications & transportation
3
576 - Genetics & evolution
3
900 - History & geography
3
200 - Religion
2
530 - Physics
2
630 - Agriculture & related technologies
2
720 - Architecture
2
800 - Literature & rhetoric
2
000 - Computer science, information & general works
1
320 - Political science
1
330 - Economics
1
370 - Education
1
500 - Natural sciences & mathematics
1
581 - Specific topics in natural history
1
658 - General management
1